定语从句与六种易混句型巧区分
一、 定语从句是高中阶段的重点语法项目之一。因此，同学们有必要全面弄清其用法。定语从句从句型上讲，它与六种句式相似，十分容易混淆。为了帮助同学们分清定语从句与这六种句型的差异，现将其分类例析如下。
一、定语从句与并列句
1．用一个恰当的词完成下列句子，使之完整与正确。
①Mr Li has three daughters，none of _____ is an engineer．
②Mr Li has three daughters，but none of _____ is a dancer．
③Mr Li has three daughters； _____ are doctors．
定语从句与并列句的主要区别在于：并列句有像and，but，so等并列连词或两个句子用分号连接，这时就不能再用引导定语从句的关系词了。
二、定语从句与地点状语从句
考试心理
1．用一个恰当的词完成下列句子，使之完整与正确。
①Rice doesn't grow well _____ there is not enough water．
②I still remember the farm _____ my parents worked ten years ago．
定语从句与地点状语从句的主要区别在于：定语从句有表示地点的先行词，而地点状语从句则没有；定语从句的关系词根据需要可用“介词＋which”来代替where，而地点状语从句则通常只能由 where引导。
三、定语从句与强调句
1．用一个恰当的词完成下列句子，使之完整与正确。
①It is on the morning of May 1st __ I met Liang Wei at the airport．②It is the factory ___ Mr Wang works．
定语从句与强调句的主要区别在于：强调句的结构为“It is／was高考语文卷＋被强调部分＋that＋从句”。被强调部分可以是除谓语以外的任何成分，当被强调部分是人时，还可用who代替th
whether是什么意思at。这一句型中，一定不能因为被强调部分是表时间或地点的词就用when或where代替樱桃用英语怎么说 that。
四、定语从句与结果状语从句
1．用一个恰当的词完成下列句子，使之完整与正确。
高中补习班①I have the same computer _____ you have．
②She is such a kind and funny girl _____ all of us like to make friends with her．
定语从句与结果状语从句的主要区别在于（这里只讨论the same．．．as／that和such．．．as／that两种情况）：在这两种情况下，如果as／that既引导从句，同时又在从句中充当一定的成分，则as／that引导的是定语从句。在the same．．．as／that结构中，用as指一样的，但不是同一个事物；用that指同一物品，
五、定语从句与习惯句型
1．用一个恰当的词完成下列句子。
①It is the first time _____ she has been in Shanghai．②It was the time ____ Chine people had a hard life．
六、定语从句与单句
1．用一个恰当的词完成下列句子。
①The mother told the lazy boy to work，_____ didn't help．
②The mother told the lazy boy to work．_____ didn't help．
名词性从句的考点剖析
1．在句中起名词作用的从句叫名词性从句，它包括主语从句、宾语从句、表语从句和同位语从句
二．如何判断为名词性从句
1．充当主语的从句为主语从句。
2．用于及物动词或介词或某些形容词如：afraid, glad, sure, plead等后为宾语从句。
3．用于系动词后拍马屁英文为表语从句。系动词有：①be动词；②意为“…起来”的动词，如look, sound, taste, smell…
③意为“变成”“成为”的动词，如：turn, become, get, go…等；④半系词，如fall, em, appear, prove, come, keep, stay, remain…等。
4．用于某些抽象名词后，解释并补充前面名词的内容的从句，被叫做同位语从句。同位语从句通常用that引导。但当抽象名词为question, problem时，要用疑问词引导。这些抽象名词为news, word(消息)，truth, fact, information, story, thought, wish, hope, desire, idea, order, suggestion, advice, proposal, promi, word(诺言)，theory, opinion, viewpoint, con
clusion, question, problem…
三. 高考常考考点
1． 名词性从句中，若缺少主语或宾语或表语，则用what.
really interested Mary was dancing. (作主语)
This is we should learn from Comrade Lei Feng. （作宾语）
Our school is no longer it ud to be. （作表语）
2. 名词性从句中，若不缺成分，不缺意义，则用that. that引导主语、表语、同位语从句时，虽不作成分，无意义，但不可省略。
he came here made me very happy. I believe he is a determined person.
My suggestion is he should be nt to hospital.
He expresd his thought he doesn’t agree to the project.
3. that 引导宾语从句时，第一个that 可以省，但从第二个that 开始不能省.
He said the exhibition was excellent and that he wanted to visit it once more.
4. if 与whether 的不同（当“是否”讲时）
①Whether可引导主语，表语，同位语从句，但是if 不能。②引导宾语从句时以下情况只用whether:
(1) 引导介词后面的宾语从句 （2）与不定式连用 （3）与or not 紧密连用
5. 通常情况下，介词后的宾语从句不用that 引导，但in that = becau “因为”；
except that +句子= except for +n. 都表示对前面的整体做相反的部分的补充或修正。
6. 所有的从句都使用陈述语序。Could you tell me what’s the matter with him?
7. whoever, whatever, whichever 引导名词性从句（也可引导让步状从，表泛指）。
whoever=anyone who定语从句；whatever=anything that定语从句; whichever “任何一个”
You must never give your child he or she wants.
leaves the classroom last should turn off the lights.
team will win the game on Saturday can get through to the national championship.
8. 区分whoever与who引导的名词性从句
breaks the law should be punished. (指人) breaks the law is unknown. (指事)
9. 当it出现充当形式主语或形式宾语时，后常用to do不定式或that从句来充当真主语或真宾语。但
①It is uless/no u/no good doing sth. 做……是没有用的/没有意义的。effect的用法
②I would appreciate it if you……如果你……我会非常感激的。
③I hate/dislike/like/love it when……我讨厌dogpile/喜欢……的那个时候。如：
I hate people speak with their mouth full.
④I can’t help it if条件状语从句 如果……我也没办法。
10. 无论几个疑问词引导一个从句或与一个不定式连用作主语，用单数谓语动词。如：
When and where we’ll go out for a picnic hasn’t been decided. When and how to go to Beijing is unknown.
11. 当Ving或to do及短语或从句作主语时用单数谓语动词，但what从句要具体看。
What we need water. What we need books.
12.疑问词+插入语+其它陈述语序
插入语通常为：do you think/believe/suppo/guess/suggest…… 如：
Who do you guess is to blame? What do you suppo has happened to Mary?
13. who与 whom who在句子中可作主语或宾语或表语;而affirmedwhom在句子中只作宾语。
14.两个连词碰在一起时，要分清各自的作用。如：
I wonder whether what you said is practical. (whether引导宾语从句到最后；而what引导主语从句到said.)
15. doubt或 wonder所在的句子为肯定句时，后常用if/whether引导宾语从句；若所在的句子为否定句或疑问句时，后则用that引导宾语从句。
16．What 名词性从句=all that 定语从句 what (=all that) you said is right.
17. 问distance, population, price, nationality, height, size, width, length, address等用 what.
What's the population of china? What's your address?
18. 名词性从句中的虚拟语气： 此处省略，请参阅虚拟语气
19.常考的句型：
①The reason why…is that…“…的原因是因为…” The reason he was late for school was he was ill.
②A is to B what C is to D. “A对B 的重要性好比C对D的重要性。” 如：
Water is to fish air is to human beings. Engine is to machine heart is to human beings.
③My hometown is no longer it ud to be.
④This is we disagree. / That is Lu Xun once lived. /This is the key to solving the problem lies.
⑤ disappointed me most was he failed in the college entrance exams.
excited me most was that he won the speech contest.
matters in learning English is enough practice.
⑥ There is no/much chance/possibility that 同位语从句。
take it for granted +that真正宾语从句。类似句型还有：e to it that/count on it that/make it clear that/
answer for it that/ find/think it +形容词+to do不定式
There is no point doing sth. There is no need to do sth. There is no doubt that从句。 It is no wonder (that)
⑦It is well known that …… As is well known, …… What is well known is that……
⑧It is certain that…… It is uncertain whether ……
⑨sb./sth.is said/considered/thought/reported/believed to have done sth.
⑩The output this year is five times what it was before liberation.
四. 解题步骤：
1 翻译句子。 2 判断出所填的连词引导的是名词性从句。
3 分析设空所在句子的成分，若少主，宾，表则用what；若不缺成分和意义，则用that;否则据意义选择。4 注意所有的从句用陈述语序。
巩固练习 which / that /who / who / whom / as / when / where / why
1.That bank was opened last week is a very modern one.
2.An architect is a person designs hous and buildings.
1.The island, is at the mouth of the river, is being developed as a scenic spot.
2.My son, is a surgeon, is now in Sweden as a visiting scholar.
3.The man you shook hands just now is head of our department.
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