① 助动词:have、has、had ② 情态用法:have to ③ 实意动词 学位英语真题汇编 1、We had to wait a long time to get our passports, ___? A. won’t we B. don’t we C. didn’t we D. shouldn’t you 2、His wife had the front door painted green yesterday, ___...
10. 现在完成进行时(have/has been doing) 表示某一动作开始于过去某一时间,延续或重复地出现至今,或将继续延续至将来。 例:We have been working on this project for over a month no...
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