定式（to do）

want/ask/allow/persuade/advise/invite/tell sb. to do sth.

想要/要求/允許/說服/建議/告訴某人做某事

My mother wants me to get up early.

tell/ask sb. not to do sth.告訴/要求某人不要做某事

stay up熬夜

My mother asks me not to stay up.

want to do sth=would like to do sth.=feel like doing sth.想要做某事

try to do sth盡力做某事

try doing sth試著做某事

try one’s best to do sth.盡某人最大努力做某事

one’s—形容詞性物主代詞

He will try his best to help us.

plan to do sth= intend to do sth.計劃做某事

can’t wait to do sth.迫不及待做某事

He can’t wait to meet his friend.

adj. enough to do sth.足夠做某事

He is old enough to go to school.

It is adj. to do sth做某事….

It is important to learn English.學(xué)英語很重要。

It is adj. for sb.to do sth.做某事對某人而言是….

It is important for usto learn English.學(xué)習(xí)英語對我們而言是重要的。

It is adj.of sb. to do sth.強調(diào)品質(zhì)

It is kind of youto help me with my English.你真好幫助我學(xué)習(xí)英語。

help n./v.幫助

helpful adj.樂于助人的

helpfully adv.

helpless adj.無助的 homeless adj.無家可歸的

help sb. with sth.幫助某人某事

help sb. do sth.幫助某人做某事

remember to do sth.記得去做某事(沒做)

remember doing sth.記得做過某事(做了)

forgot to do sth.忘記去做某事(沒做)

forget doing sth.忘記做過某事(做了)

stop to do停止正在做的事，去做另外一件事(前后做的不是同一件事)

stop doing停止做某事

go on to do繼續(xù)做某事(前后做的不是同一件事)

go on doing繼續(xù)做某事(同一件事)

use v.用，使用

useful adj.有用的

useless adj.無用的，沒用的

used to do過去常常…，曾經(jīng)

be used to do被用來…

be/get used to doing習(xí)慣于…

decide to do sth.決定做某事

decide not to do sth.決定不做某事。

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