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.

　　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。