定语从句作文有用句型【一】
陈述句语序，就是主语在前，谓语动词在后。
错误: He is wondering when can he finish this difficult job.
正确: He is wondering when he can finish this difficult job.
注意：宾语从句的否定转移
主句的谓语动词是think,believe,imagine,suppose,consider,expect,fancy,guess等,并且主句的主语是第一人称而且为一般现在时,从句的否定词一般要转移到主句上来,其反义疑问句一般与宾语从句一致.例如; I don’t think he will come to my party.而不能说成I think he won’t come to my party.
定语从句作文有用句型【二】
如果定语从句的时态与主句的时态具有同时性(包括谓语有情态动词或之后性，则可以用“关系代词或关系副词+不定式”来简化，或直接用“不定式”来修饰先行词。要注意的是，此时的不定式一定要是及物动词，如果是不及物，则需要在动词后面加上相应的介词，使之成为及物动词短语。这个结尾的介词可以提前到关系代词前面，也可以继续留在句尾。前者是正式说法，后者是非正式说法。
例1：We moved to the country so that the children would have a garden in which they could play in.
我们搬到了乡下，好让孩子们有个花园在里面玩。
改为：We moved to the country so that the children would have a garden in which to play.
或者：We moved to the country so that the children would have a garden to play in.
例2：He felt miserable unless he had neighbors (whomhe could quarrel with.
他要是没有可以吵架的邻居就难受。
改为：He felt miserable unless he had neighbors with whom to quarrel.
或者：He felt miserable unless he had neighbors to quarrel with.
例3： The conference which will be held this afternoon is bound to be a great success. 计划在今天下午举行的会议一定会取得成功。
改为：The conference which to be held this afternoon is bound to be a great success.
或者：The conference to be held this afternoon is bound to be a great success.
例4：At a ceremony in Honolulu on Dec. 29, Postmaster General John E. Potter gave a preview of the Lunar New Year Commemorative Stamps Souvenir Sheet, the grand finale of the Lunar Year stamp series, which will be available in 2005.
12月29日，美国邮政总局局长约翰·E·波特在檀香山从句了农历新年的纪念邮票小型张的揭幕仪式，这枚小型张将于2005年正式发行，它为农历新年的系列纪念邮票写下了完美的结局。(注意：与定语从句一样，也可以采用非限制性形式
改为：At a ceremony in Honolulu on Dec. 29, Postmaster General John E. Potter gave a preview of the Lunar New Year Commemorative Stamps Souvenir Sheet, the grand finale of the Lunar Year stamp series, to be available in 2005.
定语从句作文有用句型【三】
当which引导的定语从句指代主句全部内容时，可以把which改为it，作形式主语，把原来的主句改成正在主语。或者把定语从句的整个信息改换为名词短语作主语，使原来的定语从句变成简单句。
例4： He indulges himself all day in computer games, which makes his parents extremely sad.
改为：It makes his parents extremely sad that he indulges himself all day in computer games.
他整天沉湎于电脑游戏，这使他父母伤心至极。(主语从句
或者：His indulgence in computer games all day makes his parents extremely sad. (名词短语
定语从句作文有用句型【四】
John can hardly understand Russian, ______ ______?
2. Tom said to Alice, Can you help me with the work? (宾语从句
Tom asked Alice _____ she _____ help him with the work.
3. The Red Cross has helped the homeless people in the floods four times since last
year.(划线提问
_____ _____ times has the Red Cross helped the homeless people in the floods since last year?
4. Tom didnt watch TV that evening. He listened to music. (句意不变
Tom listened to music ______ ______ watching TV that evening.
5. Will you go home tomorrow? the mother asked her son. (保持句意不变
The mother asked her son ________ he ________go home the next day.
6. They will move into the new school in a month. (对划线部分提问
________ ________ will they move into the new school?
7. Mr. Smith wanted to know where he could get the information. (保持句意不变
Mr. Smith wanted to know ________ ________ get the information.
8. You can do it in class. You can also do it at home. (保持句意不变
You can do it ________ in class ________ at home.
定语从句作文有用句型【五】
一般说来，用on和at表示“as soon as, once”。on后面常接“来、去”之类的词，at后面常接“听到、看到”之类的词。in后面接其他带动作的词，相对于从属连词“while”。
例1：On removing them he was stunned to see that the plates were fogged where the crystals had covered them.当他把晶体揭开时，发现盘子上方雾蒙蒙，他吃了一惊。
例2：In running down the stairs, I heard the clock struck twelve.
我在跑下楼的时候，听见钟敲了十二下。
例3：He jumped with joy at hearing the news.他一听到这个消息就高兴得跳了起来。
定语从句作文有用句型【六】
“形容词短语”省略的理由和方式，与“分词短语”作后置定语一样。当它们不是句中的重点信息，就可以去掉关系代词和be动词。形容词作后置定语同定语从句一样，可以分为“限制性”和“非限制性”。
例1：I bought this comic book hot off the press. 我买了这本刚刚出版的漫画书。
例2：She is a kind lady, ready to help others. 她是一个善良的女人, 总是帮助别人。
例3：Companies large and small the world over have been developing their own “corporate universities”. 全世界大大小小的公司都一直在办自己的“公司大学”。
定语从句作文有用句型【七】
同上面一样，At基本上后接sound，sight“听到、看到”之类的词；on接“回来、到达”之类的词；用in，during表示“when, while”；用over表示“while”之意。当然，这一切都是相对的分类。
例1：The little girl passed out at sight of a snake.小女孩一看到蛇就昏过去了。
例2：In our hurry to get from one place to another, we failed to see anything on the way.当我们急急忙忙从这儿到那儿的时候，一路上什么也没有看见。
例3：On arrival at the railway station, he found the train had already left.当他到达火车站的时候，他发现火车已经开走了。
例4：He had intended to go, but on second thoughts, he gave up the idea.
他本来想去，但进一步考虑后,打消了这个念头。
例5：During my absence, would you please take care of my cat?
在我不在的时候，请帮我照看一下猫，好吗？
例6：He fell asleep over a book.他看书的时候睡着了。
例7：After reelection he announces that he will not help.经过一番考虑后，他宣布将不提供任何帮助。
例8：After graduation, he went to America for his PhD studies.毕业之后，他去了美国攻读博士。
定语从句作文有用句型【八】
在我们所接触的托福写作范文中，包括老托福和新托福的两类，从句在段落中出现的频率都是很高的，尤其是第一段introduction中，一般做背景介绍的时候都会使用宾语从句。
例如：Some people claim that…，在文章的主体部分中，为了体现句式的变化，各种从句交替应用就显得很重要。即使在IBT导入了first draft的概念之后，对文章的内容要求也没有改变要求，需要体现完整性和统一性。
凡事过犹不及，就像美酒再好也不能贪杯一样，从句虽然有很多好处，但千万不要过多重复。虽然从句的优点是简单句不能比拟的，但只有简单句结合从句，才能体现句子的多变性;也只有全部的句子都为主题句服务，文章的整体性才会更好的体现。
以下是议论文写作中比较好的一些从句例子：
1Many experts claim that people should positively participate in garbage recycle.
宾语从句，一般出现在首段背景介绍部分。
2Horror movies, in which there might be bleeding and terrifying scenes, are not recommended for children.
定语从句，一般在主体部分中比较常见，用以解释说明，达到简化句子的\'目的。
3As long as you are a student, you should always behave yourself.
状语从句，让步状语从句比较常见的使用although或者though来引导，这里介绍一个使用as long as来引导的句子，这个例句可以解释成“做一天和尚撞一天钟”。
4When it comes to psychology, most people believe that it is a behavioral study.
时间状语从句，例句中的应用表示了“当谈到……的时候”，这是一种美式英语中经常出现的句式，口语和书面语都可以使用，推荐各位掌握。
以上就是在托福写作中从句的用法及重要性，在掌握了从句的正确用法后，我们的托福写作不管在样式上还是在内容上都会有很大改观，离突破托福写作障碍自然也就不远了。最后小编祝大家顺利。
