米果janicefeng
百度jgsilent的句子是错误的,be动词没有变动时态,所以原句为应该为Iwasusedtoreadbooksinaquietenvironment

记住我88
过去式和过去分词变形有规律总共有5个方面(如下)过去式和过去分词还有无规律的,那些字典后面往往都有详细记载,不是很多,那些只有靠你老实的背了。1.原形动词词尾+“ed”。rain→rained(下雨)walk→walked(走)need→needed(需要)2.原形动词词尾为“e”时,直接加“-d”。live→lived(住)like→liked(喜欢)3.原形动词词尾为“辅音字母+y”结尾时,去掉“-y”然后加上“-ied”,若是词尾为“元音字母+y”,只加“-ed”。study→studied(学习)play→played(游戏)4.原形动词词尾为“辅元辅”并且重音在后三个字母上时,先双写该辅音字母后再+”-ed“。chat→chatted(闲谈)kid→kidded(开玩笑)beg→begged(恳求)注:双音节动词若其词尾的词形如本项的情形,但重音落在第一音节者直接加“-ed”,若是重音落在第二音节者,则依本项规则加“-ed”。visit→visited(访问)omit→omitted[+(省略)5.原形动词词尾为“元音+l,r”并为重读音节时,常双写词尾后再加“-ed”。compel→compelledprefer→preferred
小眼睛晶
表示一般过去式的动词通常用动词的过去式形式来表示,而动词的过去式是在动词原形的基础上变化的。动词的过去式可分为规则动词和不规则动词。规则动词的过去式变化如下:(1)一般情况下,动词词尾加 ed ,如:work—worked; play—played;want— wanted; act—acted(2)以不发音的 e 结尾动词,动词词尾加 d,如:live—lived; move—moved; decide—decided; decline—declined; hope—hoped;(3)以辅音字母 + y结尾的动词,把y变为i 再加ed,如:studied tried copied justified cried carried embodied emptied(4)以一个辅音字母结尾的重读闭音节动词,双写词尾辅音字母,再加 ed,如:stopped begged fretted dragged dropped planned dotted dripped(5)注:不规则动词的过去式变化规律性不强,须多加记忆。go - went,make - made,get - got ,buy - bought ,come - came ,fly-flew ,is/am-was,are-were ,see-saw ,bring-brought,do-did,teach-taught, think-thought, say-said,sit-sat. read-read, spend-spent, eat-ate,give-gave,sit-sat,tell-told,write-wrote,feel-felt,find-found,hear-heard,know-knew,put-put,grow-grew,take-took,catch-caught,come-came,become-became,swim-swam,sweep—swept,sing—sang,draw—drew,以上的(1)至(4)条中的发音均有改变,具体分别有/d/ /t/ /id/。而不规则动词的过去式的发音则略有不同,但是有些还是按照一定规律变化的。如以上的:make - made,get - got ,buy - bought ,come - came ,fly-flew ,bring-brought,teach-taught, think-thought, say-said,sit-sat. read-read, spend-spent,give-gave,tell-told,write-wrote,feel-felt,find-found,hear-heard,know-knew,put-put,grow-grew,take-took,catch-caught,come-came,become-became,swim-swam,sweep—swept,sing—sang,draw—drew。仔细看一看,能发现它们的一些变化规律,也就是说不需要死记硬背这些过去式,知道了原型和变化规律,就可以写出来了。有的变化部分读音也是有规律的。分类记忆是对学习过去式很有帮助的!
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