148. Its easy working out this problem.

　　(三)、替代主语从句

　　句型一：It + be + adj. + that从句

　　149. It is clear that she is a spy.

　　140. Is it true that you won the contest?

　　151. It is true that he didnt tell the truth.

　　152. It is quite plain that Tom didnt want to go there with us.

　　153. It is obvious that the driver couldnt control his car .

　　句型二：It is + adj. + that (虚拟语气)

　　154. It is strange that such a rich man should be so stingy.

　　155. It is natural that such a hardworking student should pass the exam.这么用功的学生通过考试时很自然的事。

　　156. It is important that he should not do it. 他不该做那事是有必要的。

　　157. It isnt surprise that Marry should marry him. 玛丽要同他结婚并不奇怪。

　　157. It is necessary that you should go to the doctor.

　　158. It is strange that we should meet here. 我们竟然在此相遇，真奇怪。

　　159. It is a pity that we should refuse to attend the meeting.

　　句型三：It + be + 名词或名词词组 + that从句

　　It is a pity that 真是遗憾

　　160. It is a pity that we have to leave tomorrow.

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