我們首先來(lái)看看一般現(xiàn)在時(shí)的構(gòu)成。
一般現(xiàn)在時(shí)的構(gòu)成：
a. be動(dòng)詞過(guò)去式的句式。
否定句是在was/were后面加not，was not (wasn't)/were not (weren't)。一般疑問(wèn)句是把was / were提前并放到句首，要求首字母要大寫。
b.實(shí)義動(dòng)詞過(guò)去式的句式。
①肯定式：主語(yǔ)+動(dòng)詞過(guò)去式+其它。
如：They had a good time yesterday.
②否定式：主語(yǔ)+did not(didn't)+動(dòng)詞原形+其它。
如：They didn't watch TV last night.
③一般疑問(wèn)句：Did+主語(yǔ)+動(dòng)詞原形+其它？
肯定回答：Yes，主語(yǔ)+did.否定回答：No，主語(yǔ)+didn't.
如：Did they have a meeting two days ago? Yes，they did. / No，they didn't.
④特殊疑問(wèn)句：特殊疑問(wèn)詞+did+主語(yǔ)+動(dòng)詞原形+其它？
如：What time did you finish your homework?