
四年级英语上册语法知识总结.doc
3页四年级英语上册语法知识总结缩写与完全形式的转换let’s = let us who’s = who is where’s = where is what’s = what is it’s = it is he’s = he is she’s = she is I’m = I am can’t = can not don’t = do not isn’t = is not aren’t = are notthey’re = they are doesn’t = does not 反义词类big(反义词)small / little short(反义词)tall / longstrong(反义词)weak / thin new(反义词)old / youngfat(反义词)thin open(反义词) closeturn on (反义) turn off right(反义)wrong / leftlike (反义词)hate heavy (反义词)light名词变复数规则1、一般情况下直接在名词词尾加上-s。
eg: book— books dog — dogs cake — cakes2、以 s , x , sh, ch结尾的名词,在名词后面加上 - eseg: bus — buses class — classes glass — glasses box — boxes fox — foxes wish(希望) — wishes fish(鱼)— fishes watch(手表)— watches 3、以辅音字母+y结尾的名词,变y为i再加上-esstory(故事)stories candy (糖果)— candies4、以 f 或者fe结尾的名词,变 f / fe 为v 再加上- eseg:knife (小刀)— knives wolf(狼)— wolves动词变化doing(现在分词/动名词)的规则1、一般在动词词尾加上- ingeg:play(玩)— playing 【特殊】 see (看见) — seeing clean(打扫)— cleaning help(帮助)— helping eat(吃)— eating turn(转变)—turning2、以字母e 结尾的动词,把e 去掉再加上-ing。
eg:come(来)— coming like(喜欢)— likng have(有)— having love(喜欢)— loving take(拿走)— taking3、以一个元音字母加上一个辅音字母结尾的动词,一般情况下,双写该辅音字母再加上 -ingeg:put(放)— putting swim(游泳)— swimming hop(跳高)— hopping注意:1、have (第三人称单数)has like(第三人称单数)likes speak(第三人称单数)speaks2、speak + 某种语言 表示:“说……语言” 3、There + be + 某物 + 某处 表示:“某处有某物” 4、五个元音字母:Aa Ee Ii Oo Uu元音音素开头的单个可数名词前要用冠词an。
