1）当let后只有一个单音节动词，变被动语态时，可用不带to 的不定式。 They let the strange go.---> The strange was let go.2） 若let 后宾补较长时，let 通常不用被动语态，而用allow或permit 代替。The nurse let m...
语态有两种：主动语态和被动语态。主语是动作的发出者为主动语态；主语是动作的接受者为被动语态。 1）若宾语补足语是不带to 的不定式，变为被动语态 时，该不定式前要加“to“。此类动词为感官动词。feel, hear, help, listen to, look at, make, observe, ...
时间状语一般现在时every , sometimes, at , on Sunday, 一般过去时yesterday, last week, an hour ago, the other day, in 1982, just now一般将来时next, tomorrow, in+时间, 现在完成时f...
1) 如果从句所叙述的为真理或不变的事实，则永远用现在时。 At that time, people did not know that the earth moves. He told me last week that he is eighteen. 2) 宾语从句中的助动词ought, ne...
1) 表示即将发生的或预定中计划好的活动。Are you staying with us this weekend? 这周和我们一起度周末吗?We are leaving soon. 我们马上就走。2) 渐变动词，如：get, run, grow, become, begin及die。He is ...
1) 句型：Here comes ； There goes Look, here comes Mr. Li....
1) 有些动词用一般现在时代替完成时：hear, tell, learn, write , understand, forget, know, find , say, remember. I hear (= have heard) he will go to London. I forget (=h...
1 )“书上说“，“报纸上说“等。 The newspaper says that it's going to be cold tomorrow. 报纸上说明天会很冷的。2) 叙述往事，使其生动。 Napoleon's army now advances and the gre...
时间状语从句，条件句中，从句用一般现在时代替将来时When, while, before, after, till, once, as soon as, so long as, by the time, if, in case (that), unless, even if, whether, th...
1) 事实状态的动词have, belong, possess, cost, owe, exist, include, contain, matter, weigh, measure, continueI have two brothers.This house belongs to my sist...