66. Why don't you do sth ?= Why not do sth ? 為什么不……(表建議的句型，注意用動詞原形)

　　Why not have a rest?

　　表示建議的句型還有：

　　Shall we……?

　　What /How about……?(如果是動詞，要用ing形式)

　　How about going fishing?

　　67. Would you like (sb) to do sth ?Yes, I'd love to .

　　Would you like to join us?

　　Would you like me to buy you some food?

　　68. Would you mind doing sth ? 你介意做某事嗎?

　　回答：不介意(No+……)

　　Never mind/Not at all/Of course not/Certainly not . (從不介意/一點也不介意/當然不會了)

　　回答：介意(Yes+……)

　　I'm sorry but I do./Sorry, you'd better not./ I'm afraid you can't.

　　-Would you mind my opening the door?

　　- No,of course not.

　　69. Would you please (not) do sth 你可不可以做(不做)……?

　　Would you please open the door? / Would you please not close the windows?

　　70.常用固定短語

　　finish doing sth 完成某事

　　She finished cleaning the room.

　　practise doing sth 練習做某事

　　You'd better practising reading and speaking English every day.

　　be good at doing sth 擅長做某事

　　I am good at playing basketball.

　　go on doing sth 繼續做某事,指前后做的是同一件事。

　　The students went on talking and laughing all the way.

　　Go on doing the other exercise after you have finished this one.

　　be busy doing sth 忙于做某事

　　I am busy in cleaning my room.

　　see/hear/watch sb doing sth 聽/看/觀察到某人正在做某事

　　I hear him singing.

　　be afraid of doing sth 擔心(害怕)會發生某事

　　My little sister is afraid of staying at home alone.

　　be interested in doing sth 對做某事的興趣.

　　I'm interested in playing games.