Question

He suddenly fell ill, ______ prevented him from attending his friend’s wedding.

A．why

B．what

C．that

D．which

Answer 1

D

試題分析：句意:他突然生病了，這阻止他不能參加朋友的婚禮。這是非限制性定語從句，that不能引導(dǎo)；what不能引導(dǎo)定語從句；why不能在定語從句中作主語，這里先行詞是逗號(hào)前的句子，which在從句中做主語，故選D。
點(diǎn)評(píng)：本題難度適中。非限制性定語從句是高中的重要的語法項(xiàng)目，在句中所用的關(guān)系有限制，提醒考生牢記它們的用法及意義。
即學(xué)即練：—Alice told me you called yesterday.
—Yes, I had a problem with Jane, ______  I thought you could help me with, but you were not in.
A. who            B. whom           C. that           D. which
解析：D�？疾槎ㄕZ從句。第二句句意為：是的，我與珍妮有點(diǎn)問題，我想你能幫我處理，但是你不在。which在定語從句中作with的賓語。