Question

The man ________ is smoking is my father.

1. A.
   who
2. B.
   which
3. C.
   what
4. D.
   where

Answer 1

A
剖析：本题考查定语从句的引导词。一般而言，当先行词为人，引导词就用who；当先行词为物，引导词就用which；或者都可以用that。但是在以下几种情况中，先行词只能用that：
1．先行词是不定代词时。如：She didn't forget anything that her mother had told her to buy.
2．先行词被序数词、形容词最高级或被the last，the only，the very，the same等修饰时。如：
This is the first book that I studied in the primary school.
Have you worked out the most difficult question that our teacher told us to do?
This is the very book that you want to borrow.
3．先行词是或被all，no，some，any，little，much等修饰时。如：
They haven't got any dictionaries that we need.
4．先行词是两个或多个分别表示人和物的名词时。如：
He told us many interesting things and persons that we had never heard.
5．主句是以who，which引导的特殊疑问句时。如：
Who is the man that you spoke to just now?
6．先行词是主句的表语或关系代词在从句中作表语时。如：
China is no longer the country that it used to be.