C. during whose time D. by that time
选择哪个关系词关键要看：
1）一看是限定性定语从句还是非限定性定语从句：非限定性定语从句一般不用that引导。
2）二看先行词是人还是物：which不能指代人，who, whom不能指代物，that和whose既可代替人也可代替物。
3）三看关系词在定语从句中的作用：who, that, which可以作主语，也可以作宾语；whom只能作宾语； whose只能作定语；when, where, why在定语从句中作状语。
4) 先行词是地点，不一定用where，关键要看定语从句中缺少什么成分，缺少地点状语用where，缺少主语、宾语用that/which。先行词是表示时间的名词不一定用when，在定语从句中作时间状语才用when，如果在从句中作主语、宾语要用that/which。先行词是reason, way时也一样，关键要看在从句中作什么成分。
Ex.
1. I shall never forget those years ______ I lived in the country with the farmers, _______ has a great effect on my life.
A. that; which B. when; which C. which; that D. when; it
2. The days ________ we were together without any worries are gone and I’ll always remember the days ________ we spent together.
A. which; that B. when; when C. when; that D. which; when
3. We are living in an age many things are done on computer.
A. which B. that C．whose D. when
4. Great changes have taken place in that school. It is no longer ______ it was 20 years ago, ______ it was so poorly equipped.
A. what; when B. that; which C. what; which D. which; that
www.yf1234.com 5. ––– I went to see you at about ten this morning, but you were not in the office.
––– Oh, that was probably _______ I was talking with the headmaster.
A. when B. why C. what D. that
6. Today’s Sichuan has become a representative of the west development, a place _____ hopes and opportunities have replaced poverty and backwardness.
A. which B. that C. where D. there
7. The village has developed a lot ______ we learned farming two years ago.
A. when B. which C. that D. where
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Unit2 Growing pains单元学案（附练习答案）