Question

5．在兩星期內(nèi)完成工作是不可能的．It's impossible to finish the work in two weeks．

Answer 1

分析 It's impossible to finish the work in two weeks．

解答 答案：It's impossible to finish the work in two weeks．結(jié)合句意我們用it作為形式主語，動詞不定式作為真正主語來表達，構(gòu)成It is+adj+to do sth，不可能的impossible，完成工作finish the work，在兩星期內(nèi)in two weeks．故答案是It's impossible to finish the work in two weeks．

點評 當不定式、動名詞、從句等用作主語時，避免頭重腳輕，通常在句首使用形式主語it，而把真正的主語放在句子末尾：
Is it necessary to tell his father everything？有必要把這一切都告訴他父親嗎？
It's no good sitting up too late．熬夜沒有好處．
It is quite clear that he has read the book．很顯然，他讀過這本書．
It doesn't matter what he says．他說什么沒關(guān)系．