17.-What if he failed in the next monthly examination again?
-I don't know.______ heart and be reduced _____ the class?( 。
A.Will he lose; not to attending
B.Did he lose; to not attending
C.Had he lost; not to attending
D.Would he lose; to not attending

分析 --如果他再次在月考中失敗怎么辦?
--我不知道,他會灰心而淪落為不上學(xué)了嗎?

解答 答案:D.
第一句話的if he failed in the next monthly examination again?是對將來的虛擬條件句,下文是對將來虛擬的主句,用would do,第二空be reduced to doing"淪落為做…",to是介詞,后面接動名詞,not放在動名詞前面,所以選D.

點評 將來的虛擬條件句表示與將來事實相反:
從句:Were to/should+動詞原形   主句:Would/could/should/might+動詞原形

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