OPINION

STEIN, J.

Appellant was convicted after a jury trial of attempted voluntary manslaughter (Pen. Code, §§ 664, 192), and brandishing a deadly weapon (§ 417, subd. (a)(1)). The jury further found that appellant inflicted great bodily injury upon the victim within the meaning of section 12022.7, and used a deadly or dangerous weapon in commission of the offense under section 12022, subdivision (b). The trial court determined that appellant suffered two prior serious felony convictions under section 667, subdivision (a).

Appellant was sentenced to a total state prison term of sixteen years, consisting of the middle term of three years for attempted voluntary manslaughter, a consecutive three-year term for the great bodily injury enhancement, and two consecutive five-year terms for the prior felony convictions. The one-year enhancement for use of a weapon was stayed, and appellant was sentenced to time served for the conviction of brandishing a weapon.

The sole contention presented to this court by appellant is that his three-year enhancement for great bodily injury must be stricken as "exempt from . . . section 12022.7." Appellant submits that to avoid "anomalous sentencing results" inconsistent with "the legislative intent," the offenses exempted from section 12022.7 must by implication also include attempted manslaughter.

Appellant's argument has a facile appeal. Section 664, subdivision 1, provides that the punishment for an attempted felony is "one-half the term of imprisonment prescribed upon a conviction of the offense so attempted." Since the enhancement for infliction of great bodily injury excludes manslaughter, appellant reasons that had he killed his victim he would have been sentenced to six years. (§ 193, subd. (a).) Thus, he concludes that an incongruous sentence has resulted since, having failed in his attempt to kill his victim, he has nevertheless been sentenced to six, instead of three years. We find no support for appellant's argument in either the law or the facts, and affirm his sentence.

FACTS

Appellant and Charlotte Johnson had been friends since they were in kindergarten together over 25 years ago. Travis Hill was Charlotte's boyfriend. On the evening of October 9, Travis was staying at Charlotte's house and his car was parked in front. Appellant arrived at Charlotte's house around 11 p.m. and demanded admittance. Travis told him to leave. Appellant refused to go, challenged Travis to fight and armed himself with a stick. Rather than fight with appellant, Travis called the police. Appellant then broke the windows of Travis's car.

On the evening of December 5, Travis was again staying at Charlotte's house. Around midnight appellant entered Charlotte's house either through the back door or a second story window. After trying the door to Charlotte's bedroom and finding it locked, appellant went to the kitchen and armed himself with a knife. He then hid in the closet of one of the other bedrooms. In the morning, Charlotte's daughter Erika was awakened by her brother's screams that there was a robber in the house. She entered his bedroom, looked in the closet and saw a man pointing a knife at her. Erika ran downstairs to the kitchen where her mother was making breakfast. Charlotte picked up two kitchen knives and started upstairs to confront the intruder. She immediately encountered appellant coming down the stairs holding a knife by his side. Charlotte asked appellant for the knife and he gave it to her.

When Travis heard the commotion, he picked up a crutch fearing the intruder may be armed; however, when he recognized appellant he discarded the crutch, not anticipating an armed confrontation. Travis rushed toward appellant intending to throw him out of the house because he had frightened the children and upset Charlotte. When Travis grabbed appellant around the chest and pushed him backward, appellant immediately began pounding his fist into Travis's back. The blows hurt more than a punch, but Travis was stabbed four or five times before he realized appellant was using a knife. He received several more stab wounds before he could grab appellant's wrists and stop the attack. Dizzy from loss of blood, Travis fell to the floor carrying appellant with him. Appellant straddled Travis and, holding the knife in both hands, tried to stab him in the face, neck and chest. With all his waning strength, Travis was able to hold off the blow until Charlotte called the police. Appellant then ran from the house.

During the attack Travis briefly lost his sight and believed he was dying. He suffered eight stab wounds to his back and shoulder, one of which punctured his lung. He lost over a pint of blood and was hospitalized for two and a half days.

DISCUSSION I.

"The fundamental rule is that a court should ascertain the intent of the Legislature so as to effectuate the law's purpose, and in determining intent the court first turns to the words used. ( People v. Black (1982) 32 Cal.3d 1, 5 [ 184 Cal.Rptr. 454, 648 P.2d 104].) [¶] When statutory language is clear and unambiguous, there is no need for construction and courts should not indulge in it. ( People v. Weidert (1985) 39 Cal.3d 836, 843 [ 218 Cal.Rptr. 57, 705 P.2d 380]; In re Atiles (1983) 33 Cal.3d 805, 811 [ 191 Cal.Rptr. 452, 662 P.2d 910].)" ( People v. Overstreet (1986) 42 Cal.3d 891, 895 [ 231 Cal.Rptr. 213, 726 P.2d 1288].) "In the absence of statutory ambiguity or other constitutional infirmity, we cannot disregard the plain language of these statutes." ( People v. Ladanio (1989) 211 Cal.App.3d 1114, 1119 [ 260 Cal.Rptr. 12], overruled on other grounds in People v. King (1993) 5 Cal.4th 59, 67 [ 19 Cal.Rptr.2d 233, 851 P.2d 27].)

(1) Section 12022.7 requires a three-year consecutive term be imposed upon anyone who "in the commission or attempted commission of a felony" personally inflicts great bodily injury on his victim. Excluded from the operation of this section are murder, manslaughter, and two types of arson resulting in great bodily injury. "The legislative inclusion of the four crimes as exceptions necessarily excludes any other exceptions." ( People v. Superior Court ( Grilli) (1978) 84 Cal.App.3d 506, 513, fn. 5 [ 148 Cal.Rptr. 740], overruled on other grounds in People v. Superior Court ( Mendella) (1983) 33 Cal.3d 754, 758 [ 191 Cal.Rptr. 1, 661 P.2d 1081]; see also People v. Young (1981) 120 Cal.App.3d 683, 695[ 175 Cal.Rptr. 1]; People v. Gray (1979) 91 Cal.App.3d 545, 551 [ 154 Cal.Rptr. 555].) In the face of this clear language, there is no reason to construe section 12022.7 to exempt attempted manslaughter from the enhancement for infliction of great bodily injury.

II.

Other courts have considered the analogous argument that attempted murder must by implication be exempted from the application of this section, and uniformly have rejected the proposition.

"[I]n the first paragraph of Penal Code section 12022.7, the statute specifically mentions that enhancements apply to persons who `in the commission or attempted commission of a felony' inflict great bodily injury on other persons. Yet, in the third paragraph, where exempted crimes are listed, there is no specific exemption for attempts. This evidences an intent of the Legislature not to exclude attempted murder from the provisions of the section. It is obvious that the offense of murder involves the ultimate in infliction of great bodily injury, whereas attempted murder might involve no bodily injury at all. Thus, the legislation is grounded in a reasonable legislative purpose." ( People v. Wells (1983) 149 Cal.App.3d 497, 505 [ 195 Cal.Rptr. 608].) "The law is quite clear that while section 12022.7 prohibits enhancement for murder, attempted murder is a separate crime not covered by the statute and may be enhanced." ( People v. Allen (1985) 165 Cal.App.3d 616, 631 [ 211 Cal.Rptr. 837].) In the face of this prior analogous authority, there is no reason to construe the statute to exempt attempted manslaughter from the enhancement for infliction of great bodily injury.

III.

The legislative histories of sections 12022.7 and 664 do not support an implied exclusion of attempted manslaughter from the application of section 12022.7. We must assume that the Legislature is aware of our decisions when we interpret statutes. "[F]ailure to make changes in a given statute in a particular respect when the subject is before the Legislature, and changes are made in other respects, is indicative of an intention to leave the law unchanged in that respect." ( Kusior v. Silver (1960) 54 Cal.2d 603, 618 [ 7 Cal.Rptr. 129, 354 P.2d 657].)

Section 12022.7 was enacted in 1976 as part of the determinate sentencing law, to enhance sentences for those who inflict great bodily injury in the commission of their crimes. When originally enacted, section 12022.7 exempted from its application "assault with a deadly weapon or assault by means of force likely to produce great bodily injury under Section 245." (See Stats. 1977, ch. 165, § 94, p. 679.) The section was amended in 1978 to delete the exemption for these offenses (see Stats. 1978, ch. 579, § 40, p. 1996) and was again amended in 1979 to exempt from its operation arson resulting in great bodily injury. (See Stats. 1979, ch. 145, § 17, p. 341.) Prior to the 1979 amendment, People v. Superior Court ( Grilli), supra, 84 Cal.App.3d at page 513, had concluded that attempted murder was not exempt from enhancement by section 12022.7.

Section 664 was enacted almost 100 years before section 12022.7 as part of the original Penal Code. (§ 1.) It was amended in 1976 to conform to the determinate sentencing law. (See Stats. 1976, ch. 1139, § 265, p. 5137.) At that time it provided a sentence for attempted murder of five, six or seven years. Section 664 was last amended in 1986 to increase the sentence for attempted murder to five, seven or nine years. Prior to the 1986 amendment, numerous cases had held that attempted murder was not exempt from enhancement by section 12022.7. ( People v. Superior Court ( Grilli), supra, 84 Cal.App.3d at p. 513; People v. Gray, supra, 91 Cal.App.3d at p. 551; People v. Young, supra, 120 Cal.App.3d at pp. 694-695; People v. Wells, supra, 149 Cal.App.3d at pp. 505-506; People v. Allen, supra, 165 Cal.App.3d at p. 631.)

We must assume that when the Legislature amended section 12022.7 to add and delete exemptions, and amended section 664 to change the sentence for attempted murder, it was aware that offense was not exempt from the enhancement for infliction of great bodily injury. "It is a well-established principle of statutory construction that when the Legislature amends a statute without altering portions of the provision that have previously been judicially construed, the Legislature is presumed to have been aware of and to have acquiesced in the previous judicial construction. Accordingly, reenacted portions of the statute are given the same construction they received before the amendment. (See, e.g., In re Gladys R. (1970) 1 Cal.3d 855, 868-869 [ 83 Cal.Rptr. 671, 464 P.2d 127]; Brailsford v. Blue (1962) 57 Cal.2d 335, 339 [ 19 Cal.Rptr. 485, 369 P.2d 13]; Richfield Oil Corp. v. Public Util. Com. (1960) 54 Cal.2d 419, 430 [ 6 Cal.Rptr. 548, 354 P.2d 4]; Buckley v. Chadwick (1955) 45 Cal.2d 183, 200 [ 288 P.2d 12, 289 P.2d 242]; cf. Palos Verdes Faculty Assn. v. Palos Verdes Peninsula Unified Sch. Dist. (1978) 21 Cal.3d 650, 659 [ 147 P.2d 359, 580 P.2d 1155]. See generally 1A Sutherland, Statutory Construction (4th ed.) § 22.33, pp. 191-192.)" ( Marina Point, Ltd. v. Wolfson (1982) 30 Cal.3d 721, 734-735 [ 180 Cal.Rptr. 496, 640 P.2d 115, 30 A.L.R.4th 1161].) "`Where a statute has been construed by judicial decision, and that construction is not altered by subsequent legislation, it must be presumed that the Legislature is aware of the judicial construction and approves of it.' ( People v. Hallner (1954) 43 Cal.2d 715, 719 [ 277 P.2d 393]; People v. Fox (1977) 73 Cal.App.3d 178, 181 [ 140 Cal.Rptr. 615] .) `There is a strong presumption that when the Legislature reenacts a statute which has been judicially construed it adopts the construction placed on the statute by the courts.' ( Armstrong v. Armstrong (1948) 85 Cal.App.2d 482, 485 [ 193 P.2d 495].)" ( Wilkoff v. Superior Court (1985) 38 Cal.3d 345, 353 [ 211 Cal.Rptr. 742, 696 P.2d 134].) In the face of this legislative history, there is no reason to construe section 12022.7 to exempt attempted manslaughter from the enhancement for infliction of great bodily injury.

IV.

(2) On the facts of this case, the three-year enhancement to appellant's attempted manslaughter conviction provided for in section 12022.7 does not result in a sentence incongruous with that which could have been imposed had he completed the offense; absent such incongruity, there is no basis to imply a legislative intent to exempt attempted manslaughter from the application of section 12022.7.

The basic flaw in appellant's argument is its assumption that the maximum middle term for attempted manslaughter is one-half of the middle term for manslaughter. This assumption fails to consider that these are separate offenses. Whereas manslaughter necessarily involves the infliction of bodily injury, attempted manslaughter may or may not involve bodily injury. It also fails to consider that, although manslaughter is exempt from the three-year enhancement for the infliction of great bodily injury (§ 12022.7), such injuries can be considered as a factor in aggravation. Thus, had appellant succeeded in killing Travis, the trial court could have imposed the aggravated term for manslaughter of 11 years. The correct comparison, therefore, is between the midterm for attempted manslaughter, enhanced for infliction of great bodily injury — six years — and the aggravated term for manslaughter, eleven years. An incongruous sentence can never result where the victim survives the attack because any term imposed for attempted manslaughter, enhanced for the infliction of great bodily injury, will always be less than the next higher term for manslaughter.

V.

Manslaughter and attempted manslaughter are separate offenses. ( People v. Allen, supra, 165 Cal.App.3d at p. 631.) Manslaughter is the unlawful killing of a human being without malice. (§ 192.) Attempted manslaughter is a direct but ineffectual act, committed without malice, but intended to kill a human being. (§ 21a.) In other words, attempted manslaughter is an assault; i.e., an unlawful attempt, coupled with a present ability, to commit a violent injury on the person of another. (See § 240.) Manslaughter is a homicide; attempted manslaughter an aggravated assault.

"Whether a particular punishment is disproportionate to the offense is, of course, a question of degree. The choice of fitting and proper penalties is not an exact science, but a legislative skill involving an appraisal of the evils to be corrected, the weighing of practical alternatives, consideration of relevant policy factors, and responsiveness to the public will; in appropriate cases, some leeway for experimentation may also be permissible. The judiciary, accordingly, should not interfere in this process unless a statute prescribes a penalty `out of all proportion to the offense' [citations], i.e., so severe in relation to the crime as to violate the prohibition against cruel or unusual punishment." ( In re Lynch (1972) 8 Cal.3d 410, 423-424 [ 105 Cal.Rptr. 217, 503 P.2d 921].) "Defining crime and determining punishment are matters uniquely legislative in nature, resting within the Legislature's sole discretion." ( People v. Macias (1982) 137 Cal.App.3d 465, 475 [ 187 Cal.Rptr. 100].)

The sentencing range for attempted manslaughter, enhanced three years for the intentional infliction of great bodily injury, is four and one-half, six and one-half or eight and one-half years. (§§ 664, subd. (1), 193, subd. (a), and 12022.7.) It is not disproportionate to the sentencing range for assault with a deadly weapon, similarly enhanced, of five, six or seven years. (§ 12022.7.) "Only when the punishment is out of all proportion to the offense and is clearly an extraordinary penalty for a crime of ordinary gravity committed under ordinary circumstances, do the courts denounce it as unusual." ( People v. Flores (1986) 178 Cal.App.3d 74, 88-89 [ 223 Cal.Rptr. 465].)

Appellant's argument is similar to that rejected in People v. Ladanio, supra, 211 Cal.App.3d 1114. There, a minor was convicted of attempted first degree murder and sentenced to life with possibility of parole, a sentence which precluded his commitment to California Youth Authority (CYA). (Welf. Inst. Code, § 1731.5, subd. (a).) Had he succeeded in killing his victims, he would have received a sentence of 25 years to life, and could have been committed to CYA. ( In re Jeanice D. (1980) 28 Cal.3d 210, 221 [ 168 Cal.Rptr. 455, 617 P.2d 1087].) He urged the appellate court to "construe both [Welfare and Institutions Code] section 1731.5 and Penal Code section 664 as permitting defendants in his circumstances to be eligible for CYA commitment." ( People v. Ladanio, supra, 211 Cal.App.3d at p. 1119.) Although finding the sentences of those juveniles convicted of attempted murder unquestionably anomalous when compared to those convicted of the completed crime, the court left the resolution of this incongruity to the Legislature. "[I]t is not the function of this court to define crimes and prescribe punishments. [Citation.] As noted in Jeanice D., `Although there may be no affirmative indication that the drafters of [§ 1731.5] specifically had this consequence in mind, by the same token there is similarly no indication that the drafters intended to preclude the normal application of section 1731.5' (28 Cal.3d at p. 218.)" ( Ladanio, supra, at p. 1119.)

It is for the Legislature, and not the courts, to consider appellant's argument that they excepted, by implication, attempted manslaughter from the application of section 12022.7.

The judgment is affirmed.

Dossee, J., concurred.