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hAD和wAs的用法区别

改为was是过去进行时 由Be动词中的(is,am)构成的语句要变成过去式时就需要用到(was),也就是说was是is和am的过去式.had是have的过去式. was和had的用法差别就是指Be动词和Have的用法差别. be动词后一般加形容词,或者动词不定式. have主要是与...

was用作助动词的时候,后面接动词的相应形式,如: was doing,was done. was被用作系动词时,后面接名词或形容词,如: He was a student.She is beautiful. Have用作助动词的时候,后面接过去分词done表示完成时态. Have用作实义动词,可以表示拥有的...

be 动词后跟形容词或副词或名词 如 He was a student last year. We were very happy last weekend.

is 用于一般现在时,主语是第三人称单数时使用。It is ten years since we came here . has been 用于现在完成时中。It has been ten years since we came here . had been 用于过去完成时。It had been ten years since we came here . was用于...

did是do的过去式 were是are的过去式 was是is的过去式

改为was是过去进行时由Be动词中的(is,am)构成的语句要变成过去式时就需要用到(was),也就是说was是is和am的过去式.had是have的过去式. was和had的用法差别就是指Be动词和Have的用法差别. be动词后一般加形容词,或者动词不定式. have主要是与实...

had是have 的过去式 was, were 是is, are的过去式

这里一共有两组不同的词 have has had 和 is are was were have是‘有的’意思,has是单数人称形式,had是过去式 I have a nice bag He has a nice bag I had a surgery are 是‘是’的意思 is 是单数人称称形式,was是单数人称的过去式,were是复数...

was doing是过去进行时,表示过去正在发生.例如:She was washing when her son came in.(她儿子进来时她正在洗衣服.) had been doing是过去完成进行时,基本相当于过去完成时,但可以强调动作延续.例如:They had been playing chess for the wh...

had为have的过去式,也可作为助动词 had done. was/were 为be动词的过去式的单复数形式,him为宾格,常用于介词或动词后,his 形容词/名词性物主代词,“他的”,she主格,常用作主语,her形容词性物主代词,常作定语,“她的”。

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