This is a computer. 这厮一台电脑。（在近处）

These are books. 这些是书。（在近处）

That is a bike. 那是一辆自行车。（在远处）

Those are cars. 那些事小汽车。 （在远处）

2. 在回答主语this或that的一般疑问句或特殊疑问句时，在答语中用it代替句中this或that；

在回答主语these或those的一般疑问句或特殊疑问句时，在答语中用they代替句中these或those。

Is this/that a car? 这厮一辆小汽车吗？-Yes, it is. /No, it isn't.

Are those your family? 那些是你的家人吗？- Yes, they are.

3. 在介绍某人时，用this或that，而不用he或she。

This is Liu Mei. That is Han Ying. 这位是刘梅，那位是韩英。

4. 打电话时，说自己是谁用This is...，问别人是谁用Who's that?

-Hello, is that Wei hua? -No, that is Lucy. 不是，我是Lucy.

5. 陈述放在一起的两样东西时，应先说this,后说that; 多样东西放在一起陈述时，先用these，后用those.

This is a book. That is a pen. 这是一本书，那是一支笔。

These are pencils. Those are bags. 这些是铅笔，那些是包。

测试题

一、 写出下列单词的复数形式、

1．this ________ 2. that __________ 3. it_______ 4. he_________

5. brother ______ 6. friend ________ 7. box___________8. watch ________ 9. family______ 10. boy______

二. 单项选择：（20分）

( ) 1. Thanks ______your birthday presents.

A. of B. from C. for D. to

( ) 2. -Is Ann a student or a teacher? _________ .

A. Yes, she is a student B. She's pupil

C. She's a teacher D. Yes, she's a teacher

( ) 3.______ are my sisters.

A. This B. That C. She D. These

( ) 4. Jim and Tim are good _________ .

A. brother B. friend C. friends D. brother and sister

( ) 5. -Are those cars? -Yes,_______.

A. they are B. those are C. they're D. these are