时态练习
题目
时态练习
1.-where ________ the recorder?I can’t see it anywhere.
-I _______ it right here,but now it’s gone.
A.did you put; have put B.have you put; put
C.had you put; have put D.were you putting; have put
2.-When ________ again?
-When he _____,I’ll let you know.
A.he comes; come B.will he come; will come
C.haven’t known; are D.will he come; comes
3.They asked me to have a drink with them.I said that it was at least ten years since I _______ a good drink.
A.had enjoyed B.was enjoying
C.enjoyed D.had been enjoying
4.–Come in,Peter.I want to show you something.
-Oh,how nice of you!I ______ you ________ to bring me a gift.
A.never think; are going B.never thought; were going
C.didn’t think; were going D.had been broken into; stolen
5.The police found that the house _____ and a lot of things _______.
A.has broken into; has been stolen B.had broken into; had been stolen
C.has been broken into; stolen D.had been broken into;
答案
B,问句中强调“我在哪儿都没找到它”这个结果,故用现在完成时,答句表示过去的动作,用一般过去式就可以了D,问句是一般将来时,答句符合主将从现规则C,since用在“自从”这个意思时,前面用现在完成时,后面用一般过去式B...
举一反三
已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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