下面是小編整理的定語從句優(yōu)質(zhì)課課件，歡迎閱讀。
Ⅰ. 定義
定語從句，起形容詞的作用，在句中常用來修飾名詞或代詞。被修飾的詞稱為先行詞,引導(dǎo)定語從句的'詞稱為關(guān)系詞, 關(guān)系詞的作用一是放在先行詞與定語從句中間起引導(dǎo)作用;二是在意義上代替先行詞,并在從句中充當(dāng)一個(gè)成分。其中關(guān)系代詞：who, whom, whose, which, that, as;關(guān)系副詞：when, where, why。
eg. She is the girl who sings best of all.
The pen which my uncle gave me is missing.
He lives in a house whose windows face south.
The factory where my father works is in the east of the city.
Perhaps the day will come when people will be able to breathe clean air in cities.
Ⅱ. 關(guān)系代詞
1. 先行詞是人，作主語，關(guān)系代詞用who, that
eg. He is a man( ) never leaves today’s work till tomorrow.
The boy ( ) is standing there is my cousin.
2. 先行詞是人，作賓語，關(guān)系代詞用 whom, who, that,
eg. Here is the man ( ) you’ve been expecting to meet.
The man ( ) you met yesterday is Mr. Smith.
3. 先行詞是物，作主語，關(guān)系代詞用which, that
eg . The train ( ) has just left is for Guangzhou.
Children like to read books ( ) have wonderful pictures.
4. 先行詞是物，作賓語，關(guān)系代詞用which, that,或省略
eg. The book ( ) you borrowed yesterday is really interesting.
The pen ( ) my uncle gave me is missing.
5. 先行詞是人、物，作定語，關(guān)系代詞用whose
eg. He is the professor ( ) name was Jackson.
China, ( ) population is the largest in the world, is developing very fast.
Ⅲ. 關(guān)系副詞
1. 先行詞是表示時(shí)間的名詞，在定從中作時(shí)間狀語，關(guān)系代詞用when
eg. I can’t remember the date ( ) he went abroad.
I’ll never forget the day ( ) I joined the army.
2. 先行詞是表示地點(diǎn)的名詞，在定從中作地點(diǎn)狀語，關(guān)系代詞用where; 其中注意表示抽象概念的地點(diǎn)名詞，如，situation、stage、degree、point等表示方面或程度時(shí)，也需用where
eg. This is the village ( ) Uncle Wang once lived.
They have reached the point ( ) they have to separate with each other.
He’s got himself into a dangerous situation ( ) he is likely to lose control over the plane.
3. 先行詞是reason，在定從中作原因狀語，關(guān)系代詞用why
eg. I don’t know the reason ( ) he was late.
None of us know the reason ( ) Tom was absent from the meeting.
4.引導(dǎo)定語從句的關(guān)系副詞也可以用“適當(dāng)介詞 + which”來代替。
eg. October 1, 1949 was the day when ( = ) the People’s Republic of China was founded.
This is the factory where(= ) we worked a year ago.
I don’t believe the reason why (= ) he was late for school.
Ⅳ. 關(guān)系代詞that & which的區(qū)別:
⒈ 只用that的情況
① 先行詞為all, everything, anything, nothing, little, much等不定代詞時(shí)。
eg. There is nothing ( ) can prevent him from doing it.
② 先行詞被any, only, few, no, very, little 等修飾時(shí)。
eg. This is the very book ( ) I’m looking for.
③ 先行詞被形容詞最高級或序數(shù)詞修飾時(shí)。
eg. The first place ( ) they visited in Guilin was Elephant Trunk Hill.
This is the best film ( ) I have ever seen.
④ 先行詞既有人又有物時(shí)。
eg. He talked about things and persons ( ) they remembered in the school.
⑤ 先行詞被the only, the very修飾時(shí)。
eg. Mr. Smith is the only foreigner ( ) he knows.
⑥ 句中已有who或which,為了避免重復(fù)時(shí)。
eg. Who is the man ( ) is standing beside Tom?
⒉ 不能用 that的情況：
① 引導(dǎo)非限制性定語從句;
eg. He had failed in the maths exam , ( ) made his father very angry.
② 介詞 + 關(guān)系代詞。
eg. This is the room in( ) my father lived last year.
Ⅴ. as引導(dǎo)定語從句時(shí)的用法(as 相當(dāng)于that & which)
① as引導(dǎo)限制性定語從句通常用于the same … as, such … as結(jié)構(gòu)中。
eg. This is the same book ( ) I lent you.
Such machines ( ) are used in our workshop are made in China.
② as引導(dǎo)非限制性定語從句既可放在主句之前，也可放在主句之后，位置靈活，用來修飾整個(gè)句子。通常用下列句型：as is known to all, as is said, as is reported, as is announced, as we all know, as I expect 等。
eg. ( ) I expected, he got the first place again in this mid-term examination.
Taiwan, ( ) we all know, belongs to China.
Ⅵ. 限制性定語從句和非限制性定語從句的主要區(qū)別:
限制性定語從句: 一般緊跟在先行詞后面,不用逗號把從句與先行詞分隔開來。使先行詞的意思十分明確,成為特定的人或物,是句子中不可缺少的成分,少了它句子就會失去意義不能成立,或意思不清楚,不能說明問題。通常譯為定語。
非限制性定語從句: 通常由逗號與句子其他成分隔開。只是對先行詞作進(jìn)一步的說明,沒有它句子仍能成立,意思仍很清楚。通常譯為并列的句子。
eg. I was the only person in our office ( ) was invited.(去掉定語從句，意思就不完整)
Tom’s father, ( ) is over sixty, still works hard day and night.(整個(gè)句子可分成兩句來翻譯)
Ⅶ. 分隔定語從句
即先行詞與關(guān)系代詞、副詞之間被介詞短語，同位語，謂語等分隔開來。
此種定語從句，在選擇關(guān)系詞時(shí)，要注意找準(zhǔn)先行詞。
eg. There is an expression in his eyes ( )I can’t understand.
I was the only person in my office ( ) was invited to the important ball.
I suggest you choose someone I think ( ) is very kind and friendly.
選擇填空：
1. It was April 29,2011 Prince William and Kate Middleton walked into the palace hall of the wedding ceremony.
A. that B. when C. since D. before
2.)Gutter oil is illegally recycled cooking oil, contains chemicals that are harmful to the human body and can even cause cancer.
A. it B. which C. where D. that
3. Between the two parts of the concert is an interval, the audience can buy ice-cream.
A. when B. where C. that D. which
4. The old town has narrow streets and small houses are built close to each other.
A. they B. where C. what D. that
5. Whatever is left over may be put into the refrigerator, it will keep for two or three weeks.
A. when B. which C. where D. while
6. English is a language shared by several diverse cultures, each of ------- uses it somewhat differently.
A. which B. what C. them D. those
7. A bank is the place they lend you an umbrella in fair weather and ask for it back when it begins to rain.
A. when B. that C. where D. there
8. She has a gift for creating an atmosphere for her students ------ allows them to communicate freely with each other.
A. which B. where C. what D. who
9 Ted came for the weekend wearing only some shorts and a T-shirt, ------ is a stupid thing to do in such weather.
A. this B. that C. what D. which
10. She showed the visitors around the museum, the construction ------ had taken more than three years.
A. for which B. with which C. of which D. to which
11. The school shop, customers are mainly students, is closed for the holidays.
A. which B. whose C. when D. where
12.He was so pleased with all we had done for him he wrote us a letter to praise for it.
A. what; what B. what; that C. that; what D. that; that
13.The moon travels round the earth once every month, is known to everybody.
A. it B. as C. that D. what
14. is often the case with elder people, my grandma, talked about my new hairstyle for at least 50 minutes nonstop.
A. That B. Which C. As D. It
15.After graduating from high school, you will reach a point in your life ------- you need to decide what to do.
A. that B. what C. which D. where
16.The novel was completed in 1978, the economic system has seen great changes.
A. when B. during which C. since then D. since when
17.Books bring us into the presence of the greatest minds have ever lived.
A. which B. who C.不填 D. that
18.The world is made up of matter.
A. in that we live B. on which we live
C. where we live in D. we live in
19.David is such a good boy all the teachers like.
A. that B. who C. as D. whom
20.Is this the reason at the meeting for his carelessness in his work?
A. he explained B. what he explained
C. how he explained D. why he explained
21.He was very angry and I can still remember the way he spoke to me.
A. how B. that C. what D. which
22.That’s the new machine parts are too small to be seen.
A. that B. which C. whose D. what
23.I’ve become good friends with several of the students in my school ------- I met in the English speech contest last year.
A. who B. where C. when D. which
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