1. He is a good boy. 形容詞作定語

2. Two boys need two pens.　　 數(shù)詞作定語

3. His son needs Tom's pen. 形容詞性物主代詞或名詞所有格作定語

4. The boy in blue is Tom. 介詞短語作定語

5.There is a woman doctor. 名詞作定語

6. The boy there needs a bike. 副詞作定語

7.There is nothing to do today. 不定式作定語

8. The smiling boy needs a friend. 現(xiàn)在分詞作定語

9. A boy called Tom saved the girl. 過去分詞(短語)作定語

10. He is the man that I met yesterday. 定語從句

一、定語從句的概念：在復(fù)合句中，用作定語的從句叫做定語從句。

二、定語從句的位置：通常位于它所修飾的名詞或代詞之后。

三、被修飾的名詞或代詞叫做先行詞。

四、引導(dǎo)定語從句的關(guān)聯(lián)詞為關(guān)系代詞和關(guān)系副詞。關(guān)系代詞(who, whom, whose, that, which等)在定語從句中可用作主語、定語、賓語等;關(guān)系副詞(when, where, why等)在定語從句中只用作狀語。關(guān)系代詞和關(guān)系副詞放在先行詞及定語從句之間起連接作用，同時又作定語從句的重要成分。

五、定從基本形式：先行詞(名詞/代詞) + 關(guān)系代詞/關(guān)系副詞+ 定從

六、that引導(dǎo)的定語從句

She is the girl that talked to you yesterday. (that作主語)

The coat (that) I put on the desk is blue. (that作賓語)

結(jié)論：that引導(dǎo)的定語從句既可以修飾人，也可以修飾物;

that在從句中作主語或賓語;

作主語時不可省略，作賓語可省略。

例如：

1. I like music. I can dance to music.

I like music that I can dance to. (that在從句中用作賓語。)

2. I prefer a sandwich. A sandwich is really delicious.

I prefer a sandwich that is really delicious.(that在從句中用作主語。)

注意：that在定語從句中作主語時，定語從句中謂語動詞的單復(fù)數(shù)應(yīng)與先行詞保持一致.

例如：I prefer movies that are scary.

I like a sandwich that is really delicious.

I love the singer that is beautiful.

I have a friend that plays sports.