107. How long does it take to fly Being to London?

　　108. It takes patience and hard work to master English.

　　It costs sb. some money to do sth. 某人花多少金钱做某事

　　109. It cost him a great deal of money to take the trip.

　　100. It cost me 2000 dollars to collect these stamps.

　　It occurs to sb. to do sth. 某人突然想到做某事

　　111. It never occurred to me to take advantage of you. 我决没有想到过要占你便宜。(利用你)

　　It feels + adj. + to do sth.

　　112. It feels pleasant to talk with her. 同他谈话使人感到愉快。

　　113. It must feel strange to have a twin brother.

　　114. It feels unhappy to be with him.同他在一块让人感到不舒服。

　　115. It feels nice to take a walk in the evening. 晚间散散步感觉很好。

　　其它例句

　　116. It seems a pity not to have taken his advice.

　　117. It wont hurt to postpone the party for a few weeks.

　　118. It did surprise me to hear you say so.

　　119. It gave great pleasure to have finished this work ahead of the dead line.

　　(二)替代动名词

　　动名词可以直接位于句首作主语，但为了强调，或动名词过长时，要用it作形式主语置于句首，而把动名词放到句子最后。这也是英语尾部重压原则所要求的。

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