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(常考)

　　John always kept (on) asking questions.

　　keep sb doing sth 讓某人做某事(常考)

　　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……(常考)

　　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.

　　51. remember/forget to do sth 記得/忘記做某事(沒有發生)

　　Please do remember to post a letter forme.務必記得幫我寄信。

　　remember/forget doing sth 記得/忘記做過某事

　　I remember telling you the news before.我記得曾經告訴過你這個消息。

　　52. see sb do sth 看見某人做某事(結果)

　　see sb doing sth 看見某人正在做某事(正在進行中)

　　be seen to do sth 做某事被看見

　　I saw them play football last weekend.

　　I saw her cleaning the classroom.

　　I saw him get on the bus.= He was seen to get on the bus.

　　53. something to eat/drink 一些吃/喝的東西(詞不定式放在something等后修飾這些詞)

　　I need something to eat. 我要一些吃的東西。