2016-2017中考英语作文指导如何写好一个句子？--如何写好复合句。
复合句是由一个主句和一个或一个以上的从句构成的句子，我们在写作时，要学会使用宾语从句，状语从句和定语从句等。
下面就谈谈有关这方面的一些句型。
句型 1 主+谓+that从句-- We’re sure that we’ll win the first prize.我们肯定能得头奖。
He found that his English was too poor.他发现他的英语太差了。
She decides that she is going to be a nurse.他决定要当个护士.I don’t believe that he has finished his work.我相信他还没有做完他的工作.句型点评：在动词say，think，hope，believe，expect，explain，hear，know，find，regret，remember，decide后可接that引导的宾语从句，that常可省略。
句型2 主句+whether/if+从句-- I wonder he will come （or not ）.我不知道他会不会来。
I asked her if she had a dictionary。
我问他是否有字典。
I don’t know whether he will be here on time.我不知道他是否能按时到这里。
句型点评：if和whether可引导一个表示疑问的宾语从句，二者一般情况下可通用。
句型3 主句+疑问词+从句--No one knows what he is doing.没有人知道他在干什么。
Take back what I said just now.我收回刚才说的话。
Could you tell me where the booking office is？你能不能告诉我售票处在什么地方？I must thank you for what you have done for me.我一定要谢谢你为我所做的事。
句型点评：连接代词who，whom，whose，what，which等和连接副词when，where，why，how等都可以用来引导特殊疑问句充当宾语从句。
注意：从句中要用陈述语气。
句型4 主句+when/while/as/before/after+从句（时间状语从句)We took notes as/while/when we were listening to the teacher.我们一边听老师讲课一边做笔记。
Please keep silent while/when she’s writing.她在写作，请保持安静.I was speaking when a policeman came in.我正在说话，这时，突然进来一个警察.You must finish the work before I go home.你们必须在我回家以前把工作做完。
句型点评：时间状语从句通常由从属连词when，while，as，after，before等引导，使用时必须注意他们之间的词义和用法区别。
句型5 主句+until/till-从句--Last night,his parents waited for him till/until it was 12.昨晚他父母一直等他到12点。
We practised singing till/untill class was over.我们练唱一直练到下课。
The child didn’t begin t o do his lessons till/until he finished watching the TV play.这个小孩看完电视剧后才开始做功课。
He did not go home until/till he finished his work.他一直把工作做完之后才回家。
句型点评：在使用本句型时要注意until/till的用法，若主句中的谓语动词是“keep，remain，stay，wait..”等延续性动词，则用动词的肯定式，until/till的含义是“一直到....为止”；若主句中的谓语动词是“arrive，come，finish，go，reach，start”等瞬间性动词，则用动词的否定式，这时的until/till的含义是“直到....才....”句型6 主句+since-从句/It is+.....since.....We have lived here since we came to the city.自从我们来到这个城市，就一直住在这儿。
She has never ill since he left the hospital.他出院以来一直没病过。
We have been good friends since we were at school.我们自上学起就是好朋友了。
It is four years since we met last time.自从上次见面以来已经四年过去了。
句型点评：since是从属连词，连接时间状语从句表示“自从....以来”。
从句中的谓语动词通常用过去时，主句中的谓语动词通常用现在完成时，以表示从过去某一时刻开始，一直延续到现在的动作或状态。
句型7 主句+as soon as/the moment.... ---Please call us as soon as you arrive at the airport.请你一到机场就给我们打电话。
I’ll tell your mother the news as soon as I see her.我一见到你母亲就把这个消息告诉她。
As soon as the students got to the farm，they began to help the farmers with their work.学生们一到农场，他们就开始帮农民干活了。
The moment （that）the teacher came in，the children stopped talking.老师一进来，孩子们立即停止谈话。
句型点评：as soon as表示“一...就...”的意思，它引导的从句所表示的动词几乎跟主句的动作同时发生，相当于the moment that引导的从句。
句型8 主句+where/wherever(no matter where)从句--Get up where you fall.哪里跌倒就在哪里站起来。
She phoned to ask me to stay where I was.她打电话给我，叫我留在原地。
Wherever you go，I always follow you.不论你到哪里，我总是跟着你。
Wherever you go，you may find friends.不论你走到哪儿，你可能找到朋友。
句型点评：where和wherever都可引导表示地点的状语从句，不过wherever的语气较强，相当于“no matter where”意思是“不论/无论......在/到哪里....”。
句型9. 主句+because从句；Since/As从句+主句He didn’t pass the English examination last term because he hadn’t studied hard.因为他学习不努力，所以上学期英语考试不及格。
As it is very cold today，you’d better put on a coat.今天天气很冷，你最好穿件外衣。
Since everything is ready，you can begin your experiment.既然一切都准备好了，现在你们可以开始做实验了。
句型点评：表示原因的状语从句通常用从属连词because，since和as等引导。
句型10. 主句+so that/in order that-句型He shouted at the top of his voice so that（in order that）he might be heard.他大声喊，为的是让别人听见。
We had to go to the hall early so that（in order that）we might get good seats.我们不得不早去大厅，为的是能够得到好的座位。
Mr green came to China in order that(so that)he might visit the Great Wall and other places of interest.格林先生来中国，为的是参观长城和其它名胜。
句型点评：so that/in order that意思是“以便；为的是”，引导表示目的状语从句，其从句中的谓语动词通常要与一些情态动词“may，might，can，could”等连用。
另外，“so as to/in order to/to+do”也可引导目的状语。
句型11 主语+be/v+so+adj./adv.+that从句She sang so beautifully that she was highly praised by the audience.她唱得很动听，所以受到了听众的高度赞扬。
Jenny is so lovely a child that everybody loves her./Jenny is such a lovely child that everybody loves her.珍妮是这样一个可爱的孩子，所以每个人都喜欢她。
She did so well in the office that she was praised by the manager。
她在办公室里干得很出色，受到了经理的表扬。
句型点评：表示结果的状语从句，通常用“so/such....that”表示“如此...以致”来引导。
句型12 主句+as+adj./adv.+as+比较状语从句主句+not/so(as)+adj./adv.+as+比较状语从句The Yellow River is not so(as) long as the Yangtze River.黄河不像长江那样长。
He is not so clever as I thought.他不像我所想的那样聪明。
I hope you will start as early as you can.我希望你们尽早动身。
句型点评：“as+adj./adv.+as”这个结构中，其中的形容词或副词要用原级；“not as（so）+adj./adv.+as”意为“不如....那样；不像....那样”，其中的形容词或副词也用原级。