解析 dare既可做情态动词,也可做实义动词。用做情态动词时,其一般现在时没有词形变化,在构成疑问句和否定句时,也不借助do。用做实义动词时,具有单数第三人称、过去时、过去分词和现在分词的形式,在构成疑问句和否定句时,需要借助do,而且在与动词不定式连用时,还需带介词to。故选D项。
6.
what he can do.He might get a job tomorrow.He might stay out of work for weeks.
A.We didn’t know
B.He doesn’t know
C.There is no knowing
D.It was known that
答案 C
解析 There is/was no knowing/telling...没法知道/说……。
7.Many parents feel that their child’s IQ is
determines how well they are going to do in their future life.
A.what
B.that
C.which
D.where
答案 A
解析 what引导表语从句,what = the thing that。
8.By the time Jane gets home,her aunt
for London to attend a meeting.
A.will leave
B.leaves
C.will have left
D.left
答案 C
解析 此题中从句中为by the time+一般现在时,主句中应用将来完成时。
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