11.I don't know _______ they have passed the exam .
A.what B.if C.when D .where
答案:B .翻译:我不知道他们是否通过了考试.
if引导宾语从句,"是否"的意思,if 在宾语从句中不充当成分
12.I hardly understand _______-
A.who B.what C.when D .that
答案:B 翻译:
句子不完整.
13.She didn't know _______ back soon .
A.whether he would be B.if would he be
C.whether he will be D .if will he be
答案:A 翻译:她不知道他是否会很快回来.
if/whether都可以在及物动词后引导宾语从句,表示"是否".宾语从句需要使用陈述句语序,并且主句是一般过去时,宾语从句表将来要用过去将来时,用would.故选A
14.I don't know ______ he still lives here after so many years .
A.whether B.where C.what D .when
答案:A 翻译:我不知道这么些年以后他是不是还住在这儿.
whether引导的宾语从句.由于宾语从句中不缺成分,所以选择whether来引导,在从句中不充当成分,"是否"的意思.而when/where要在宾语从句中充当状语,而what需要充当主语或宾语
15.He asked me _______ told me about the accident .
A.whom B.which C.who D .whose
答案:C 翻译:他问我是谁告诉了我这场事故.
who引导名词性从句,做ask的宾语从句.who在宾语从句充当主语,指人.whom指人的时候只能做宾语,whose表示所有格,做定语.which不能指人.