Question

It isn’t clear_____ is to blame.We need to find a solution to the problem first.

A．who is it that

B．who it is that

C．it is who that

D．that who it is

Answer 1

B

試題分析：這里It是形式主語(yǔ)，who引導(dǎo)的是真正的主語(yǔ)從句，從句是強(qiáng)調(diào)句型，被強(qiáng)調(diào)部分是who，因?yàn)閣ho是連詞必須放在主語(yǔ)從句的句首，又因?yàn)橹髡Z(yǔ)從句的語(yǔ)序是陳述語(yǔ)氣。故選B。溫馨提醒：強(qiáng)調(diào)句型的結(jié)構(gòu)：it be 被強(qiáng)調(diào)部分+ that+其他，判斷強(qiáng)調(diào)句型的方法是把it be that去掉，整個(gè)句子是成立的。
點(diǎn)評(píng)：把主語(yǔ)從句與強(qiáng)調(diào)句型放在一起考查，增加了試題的難度，考生必須這兩個(gè)知識(shí)點(diǎn)都能熟練掌握才行，近幾年高考單選考查多個(gè)知識(shí)點(diǎn)的頻率高了。
即學(xué)即練：_____  you usually go to work?
A. How is it that     B. How it is that       C.it is how that        D.that how it is
解析：A. 句意：你通常是怎樣去上班的？