Question

【题目】The famous writer often says that he ______ so much without the support and encouragement from his wife.
A.shouldn't achieve
B.shouldn't have achieved
C.couldn't achieve
D.couldn't have achieved

Answer 1

【答案】D
【解析】考查情态动词。句意：这位著名作家经常说如果没有他妻子的支持和鼓励他不可能取得如此大的成就。couldn't have done”不可能已经做了某事，此处指对过去事情有把握的否定推测“，故选D。