注意：本句型就相当于It pays to do sth.；worth while 不要写成worthwhile。

　　96. It is worth while to take a trip abroad.

　　97. It is worth while to learn English.

　　Its best to do sth. 最好做某事 = To do sth. is best.

　　98. Its best to set off tomorrow. 最好明天动身。 = To set off tomorrow is best.

　　99. Its best to review the lessons one more time. = To review the lessons once more is best.

　　Its better to do A than to do B = To do A is better than to do B.

　　100. It is better to borrow than to buy. = To borrow is better than to buy.

　　101. Its better to stay at home than to go to the cinema. = To stay at home is better than to go to the cinema.

　　How is it possible to do sth.? 这怎么可能？

　　102. How was it possible to fall down from the third floor without being hurt?

　　103. How is it possible for a girl of ten to fly an airplane?

　　Its no use to do sth. 做是没有用的

　　104. Its no use to argue with him.

　　105. He doesnt know the answer, so it is no use to ask him.

　　It takes (sb.) + 时间/条件 + to do sth. 某人花了多少时间做某事；做某事需要(条件)

　　106. It takes me half an hour to walk from here to school.

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