1) 两词都是必须的意思，have to 表示客观的需要， must 表示说话人主观上的看法，既主观上的必要。 my brother was very ill, so i had to call the doctor in the middle of the night 我弟弟病得很厉害，我...
interested to do 对做某事感兴趣，想了解某事。 interested in doing 对某种想法感兴趣，doing 通常为想法。i shall be interested to know what happens 我很想知道发生了什么事。 (想了解)im interest...
1） 情态动词 ( 除ought 外，ought to)：2） 使役动词 let, have, make：3） 感官动词 see, watch, look at, notice , observe, hear, listen to, smell, feel, find 等后作宾补，省略to。 注意：...
mean to do 打算、想 mean doing 意味着 i mean to go, but my father would not allow me to 我想去，但是我父亲不肯让我去。 to raise wage means increasing purchasing power 赠加...
cease to do 长时间，甚至永远停做某事。cease doing 短时停止做某事，以后还会接着做。that department has ceased to exist forever 那个部门已不复存在。 the girls ceased chatting for a mom...
1) 不及物动词或动词短语无被动语态：appear, die disappear, end (vi 结束), fail, happen, last, lie, remain, sit, spread, standbreak out, come true, fall asleep, keep sil...
1) must用在肯定句中表示较有把握的推测，意为一定。 2) must表对现在的状态或现在正发生的事情的推测时， must 后面通常接系动词be 的原形或行为动词的进行式。 you have worked hard all day you must be tired 你辛苦干一整天，...
汉语中：我，自称，自己，亦指自己一方。你，称对方，多称指一个人，有时也指称若干人；也泛指任何人，比如死我活。他，称你、我以外的第三人，一般指男性，有时泛指，不分性别；也别的，另外的，如：他人。英语中：第一人称单数i me 我第二人称单数 you you 你第三人称单数he him 他（阳性） s...
1） 表示目的；它的否定式是so as not to do。 tom kept quiet about the accident so as not to lose his job 汤姆对事故保持沉默是为了不丢掉他的工作。 go in quietly so as not to w...
13 句子的种类 （一）按使用目的可分为陈述句、疑问句、祈使句和感叹句。1） 陈述句（declarative sentences）：说明一个事实或陈述一种看法。 light travels faster than sound 光比声速度快。 （说明事实） the film is r...
并列连词引导两个并列的句子。1) and 与or 判断改错： (错) they sat down and talk about something (错) they started to dance and sang (错) i saw two men sitting behind and wh...
当主语后面跟有with, together with, like, except, but, no less than, as well as 等词引起的短语时，谓语动词与前面的主语一致。 the teacher together with some students is visiting th...
1）不用that的情况 a) 在引导非限定性定语从句时。 (错) the tree, that is four hundred years old, is very famous here b) 介词后不能用。 we depend on the land from which w...
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...
1） 用half of, part of, most of, a portion of 等词引起主语时，动词通常与of后面的名词，代词保持一致。 most of his money is spent on books most of the students are taking an activ...
比较：because, since, as和for 1） because语势最强，用来说明人所不知的原因，回答why提出的问题。当原因是显而易见的或已为人们所知，就用as或 since。 i didnt go, because i was afraid since as the weat...
带to 的情态动词有四个：ought to, have to, used to, be to, 如加上have got to ,(=must), be able to，为六个。它们的疑问，否定形式应予以注意： do they have to pay their bill before the en...
would rather do would rather not do would rather… than… 宁愿……而不愿。还有would sooner, had rather, had sooner都表示宁愿、宁可的意思。if...
