2019屆高考英語Unit 4 Earthquakes精講復習教案
答案： c
3.(•安徽“江南十校”聯考)—when did your cousin begin to show his interest in medicine?
—it was a saturday________he noticed his uncle experimenting on a frog in his lab.
a.that b.what
c.when d.which
解析： 考查定語從句。解答有關定語從句題目的關鍵是：先找出先行詞，然后把先行詞代入從句中，判斷其在從句中的地位和作用。該定語從句的先行詞是a saturday，關系詞在從句中作時間狀語，所以用關系副詞when。該題考生常誤選that，認為是強調句型。
答案： c
4.(•東北三校聯合模擬)there are 51 students in class three，________failed in the test.
a.all of which b.all of them
c.none of whom d.none of them
解析： 考查定語從句。后半句是非限制性定語從句，修飾先行詞students，應用whom引導。因為前后兩句之間沒有并列連詞，所以b、d兩項不正確。
答案： c
5.(•濟南高考模擬)the time is drawing near________food raised in space will directly benefit mankind.
a.where b.when
c.whether d.why
解析： 考查定語從句。句意為：在太空種植的食物直接使人類受益的時刻快要來了。when引導的定語從句修飾先行詞the time。
答案： b