41. It takes sb sometime/money to do sth . 花費某人多長時間做某事(常考)

　　It takes me an hour to walk there and back.

　　42. pay …for… cost spend…on….. it take …to do sth 花費

　　He paid for it out of his own pocket.

　　43. It's best for sb to do sth. 對某人來說做某事是最好的

　　It's best for you to do more exercise.

　　had better do sth 最好做某事(注意had沒有時態和人稱的變化，better后接動詞原形)

　　You had better go to the school.

　　44.It's time for sb to do sth 是某人做某事的時候了

　　It's time for us to have dinner.

　　45.keep (on)doing sth 堅持做某事(�？�)

　　John always kept (on) asking questions.

　　keep sb doing sth 讓某人做某事(�？�)

　　Don't keep me waiting.

　　keep sbfrom doing sth 阻止某人做某事(常考)

　　He keeps her from cutting the tree.

　　keep sb/sth +adj 使某人保持……的狀態

　　Washingyour hands keeps you healthy.

　　46.learn to do sth 學做某事 Ilearn to play football.

　　learn sth from sb 向某人學習

　　I learn the spirit from him

　　47.like to do/doing sth 喜歡做某事 like sb to do sth 喜歡某人做某事

　　She likes swimming./She likes to swim this afternoon.

　　48.need to do sth/ need doing sth/need to be done 需要做某事

　　The garden needs to be watered. / The garden needs watering.

　　49. prefer to do sth rather than do sth 寧愿……而不愿……(�？�)

　　I would prefer to spend the weekend at home rather than drive out.

　　prefer doing sth to doing sth 喜歡做……勝過做……

　　I prefer reading books to going shopping. 比起購物來，我更愛讀書。

　　preferto do sth 喜歡(愛)做某事

　　50. refuse to do sth 拒絕做……

　　I refuse to answer that question.