关键句型1.不用说 It goes without saying that （It is） needless to say （that） It is obvious that eg:It goes without saying that it pays to getting up early.2.在各种之中， Among various kinds of ，/Of all the ，eg:Among various kinds of sports, I like jogging in particular.3. 就我的看法；我认为In my opinion, As far as I am concerned, I am of the opinion that 4.随着XX的增加/发展 With the increase/growth of XX, With the development of science and technology, eg：With the rapid development of Taiwans economy, a lot of social problems have appeared.5.XX（对某人而言）很重要/有必要/紧急It is necessary/ important/essential/ proper/ urgent（for sb.） to do / that eg：It is proper that we （should） keep the public places clean.6. how 引导的感叹句eg：At least it will prove how honest you are.7.状语从句每当我听到/看到/想到/遇到/做我就忍不住感到Whenever I hear/ see /think of/ meet with /do ， I cannot but feel excited/ sad/nervous/frightened/surprised.eg:Whenever I think of the clean river near my home, I cannot but feel sad.= Every time I think of the clean brook near my home, I cannot help feeling sad.8.Since + S + 过去式， S + 现在完成式。eg：Since he went to senior high school, he has worked very hard.易混淆词组1.stop to do sth. 和stop doing sth.“stop to do sth。” 停下正在做的事情然后去做其它事情 “stop doing sth。”停下正在做的事情例：We have kept doing our homework for a long time. Lets stop to listen to music. 2.forget to do sth。和forget doing sth. (remember to do sth. 和remember doing sth)“forget to do sth”忘记去做某事，谈的是未来的事情；“forget doing sth”忘记过去应该做的事。例：“Dont forget to do your homework。” said the teacher.“Mr. Chen ，Im sorry. I forgot doing my homework.” said Li Ming.3.have sth. done。(让别人)做某事例：I had my hair cut yesterday afternoon. My computer can not work now. I must have it repaired.4. see sb. do sth & see sb. doing sthsee sb. do sth看见某人(经常)做某事see sb. doing sth看见某人(正在)做某事例:I often see him do exercise in the morning. When I was walking in the park, I saw him drawing a picture there.5. 在主动语态中，感官动词(see, hear, feel, watch等)和使役动词(make, have, let等)要求接不带to的不定式做宾语补足语，而在被动语态里，不定式要带上to。例：The boss often made the workers work 10 hours a day.The workers were made to work 10 hours a day.She was heard to use strong language. 6. 介词后面一般接动名词。同学们要特别注意介词to和不定式符号to的区别，例：prefer doing sth. to doing sth. 相比更喜欢look forward to doing sth. 期待/盼望做某事make a contribution to doing sth. 为做出贡献7. 现在分词和过去分词做定语的区别现在分词含有正在进行的意思，而过去分词含有被动或者已经完成的意思，如：a developing country a developed country a boy named Jim 一个叫Jim的男孩