國中英語定語從句典型錯誤分析
1. She used to help my brother, who was very kind of her.
改：將who改爲which。
析：犯這類錯誤的主要原因是把my brother錯當成了先行詞。關係代詞which指代的先行詞是整個主句，它引導非限定性定語從句。
2. Do you still remember the day when we spent together in China last year?
改：將when改爲that/which或將 when刪除。
析：犯這類錯誤的主要原因是沒有弄清關係代詞與關係副詞的用法區別。不能因爲先行詞表示時間就一定用關係副詞when, 而要學會準確把握句子的結構，正確分析句子的成分。例句中定語從句要用關係代詞引導，並在定語從句中作spent的賓語。
3. The way which you look at problems is wrong.
改：在which前加in或者將which改爲that，也可將which刪除。
析：當先行詞是the way時，定語從句常用that/in which引導，that/in which也可省略。
4. We were interested in the things and people whom we saw during the trip.
改：將whom改爲that。
析：當先行詞既有人又有物時，定語從句用關係代詞that引導，that作賓語時可省略。
5. It was in the kitchen where the fire broke out.
改：將where改爲that。
析：犯這類錯誤的主要原因是把強調句型與定語從句混爲一談了。例句爲強調句型，強調的是地點狀語in the kitchen。
6. Is this factory that you have been working in since your graduation?
改：在that前加the one。
析：犯這類錯誤的原因是把this factory錯看作是定語從句的先行詞了。解答這類題時，我們不妨先將疑問語序改爲陳述語序。this factory是主句的主語，故應添加the one作定語從句的先行詞。當然，在factory前加the也可以，那麼this是主語，the factory是表語。
7. He is such a lazy man as no one wants to work with him.
改：將him刪除或將as改爲that。
析：犯這類錯誤的主要原因是把such ... as ...和such ... that ...兩個句型混淆了。
8. There are many books in the library, most of which is in Chinese.
改：將is改爲are。
析：關係代詞作主語時，定語從句中謂語動詞要與先行詞在人稱和數上保持一致。例句中關係代詞which指代的是先行詞books，故從句謂語動詞應用複數形式。
9. I am terribly sorry for having broken the MP4 I borrowed it from you the other day.
改：去掉it。
析：定語從句中的關係代詞在從句中充當一定的成分，因此從句中不能再出現與關係代詞指代相同的代詞或名詞，以避免重複。例句中it與省略了的關係代詞that/which重複，應去掉。
10. We will do all what we can to help you out.
改：改what爲that或將what刪除。
析：先行詞爲指物的.不定代詞時，定語從句用that來引導，that在從句中作賓語時可省略，而what不能引導定語從句。
11. He is our English teacher, without his help I couldn't have made such rapid progress.
改：將his改爲whose。
析：犯這類錯誤的主要原因是沒有弄清句子結構。這是一個主從複合句，逗號前面是主句，逗號後面是"介詞 + 關係代詞"引導的非限制性定語從句。
12. The scientist has made another discovery, that I believe is of great importance.
改：將that改爲which。
析：that不能引導非限制性定語從句。
13. There's somebody that wants you on the telephone.
改：that改爲who或去掉that。
析：先行詞是-body，-one構成的複合代詞時，關係代詞用who (whom)不用that。口語中在It be/there be/here be後面的關係代詞可省略。
14. John, who greeted me is my teacher, that is deeply respected by all.
改：me之後加逗號；that改爲who。
析：第一個who引導的是非限制性定語從句。從句位於句中時，兩頭須用逗號與主句隔開。第二個who引導的也是一個非限制性定語從句，關係代詞在指人時須用who(whom)，在指物時須用which，不能用that。
15. Do you know the reason why do many people like Zhang Yimou's films?
改：去掉why之後的do。
析：定語從句須用陳述句語序。關係副詞why在從句中作原因狀語，其先行詞是表示原因的reason。
16. Which is known to all, Mount Emei is one of the famous mountains of China.
改：Which改爲As。
析：which, as都可作關係代詞引導非限制性定語從句，表示整個主句的內容，並在從句中作主語、賓語。這種從句放在主句的後邊時，which, as均可引導；放在主句的前邊時，一般用as引導。
17. Who are the persons who are sitting on the travel bags and which is the bag which belongs to me?
改：將句中第二who和第二個which 都改爲that。
析：當主句是以who或which開頭的特殊疑問句時，爲了避免重複，定語從句要用that引導而不用who (whom)和which引導。
18. The woman who you spoke is an actress.
改：在spoke之後加to。
析：關係代詞who在定語從句中作介詞的賓語時，介詞須後置。如果介詞to前置，who得變爲whom。
19. The number of people lost homes reached as many as 250,000 in the earthquake and the fires in San Francisco in 1906.
改：在people之後加關係代詞who/that。
析：關係代詞在定語從句中作主語時不能省略。
國中英語定語從句知識點：非限定性定語從句
非限定性定語從句：非限定性定語從句的作用是對所修飾的成分作進一步說明，通常和主句間用逗號隔開，將從句拿掉後其他部分仍可成立
1. which引導的非限定性定語從句來說明前面整個句子的情況或主句的某一部分
2. 在引導限定性定語從句時，that有時相當於in which, at which, for which或at which
Attitudes towards daydreaming are changing in much the same way that(in which) attitudes towards night dreaming have changed. 人們對白日做夢的態度正在改變，這與人們對夜間做夢的看法的變化有非常相似之處。
I like the music for the very reason that(for which) he dislike it. 我出於某種原因喜歡這種音樂，而他恰恰與我相反。
We arrived the day that(on which) they left. 剛好我們到的那天他們走了。
3. 有時as也可用作關係代詞
4. 在非限定性定語從句中，不能用that，而用who, whom代表人，用which代表事物
