初三年级九年级上册英语-Unit 1-重点语法

九上-Unit 1-重点语法

语法：动词-ing的用法

知识讲解

v-ing用法小结

1. v-ing在句中作主语

(1) v-ing作主语时，谓语动词用第三人称单数形式。

Doing morning exercises is good for our health.

(2)可以用 it作形式主语，而把真正的主语后置。

Getting up early is good for your health.

→It's good for your health to get up early.

2. v-ing在句中作宾语

v-ing在句中作宾语时，一般放在某一及物动词或介词之后充当这一动词或介词的宾语。

(1) 后接v-ing作宾语的及物动词有：finish, enjoy, keep, stand(忍受), suggest, advise, practice, allow, mind, imagine 等。

The tourists enjoy staying in Kunming all the year round.

Do you mind opening the window?

(2) v-ing作介词的宾语，包括以介词结尾的动词短语，如:give up, take part in，be good at等。

I know you are good at drawing pictures.

Many young people took part in planting trees on Tree Planting Day.

例题精讲

语法：动词-ing的用法

例1.用括号内所给单词的适当形式填空

1. Do you often memorize new words by_____ (make) vocabulary lists?

2. Can you finish ________ (do) your homework before nine o’clock?

3. Don’t worry about _________ (make) mistakes when you talk to foreigners in English.

4. _______(help) each other at school _______ (be) a way to improve our friendship.

5. We have worked for three hours. Let’s stop _______ (work) and have a rest.

【答案】

making

doing

making

Helping/ is

working

【解析】

题干解析:

语法：介词by的用法

知识讲解

用法词义例句

表示方式、方法或手段，后接名词或动词-ing 意为“使用某物；靠；乘

(车、船)等”

Do you learn English by

reading aloud?

形式

表示时间意为“到……时(为止)；

在……以前、不迟于”I have to go to bed by ten o'clock.

表示地点、位置意为“靠近；在……旁边”The boy often reads books

by the river.

表示移动的方向意为“从……旁边过”He walked by me without

speaking.

用在反身代词之前意为“独自”Tina couldn’t move the

heavy box by herself.

表示动作执行者，用于被动语态意为“被; 由”The house was destroyed by

fire.

用于某些固定短语中by the way 顺便问一下

one by one 一个接一个地

step by step 一步一步地

by accident 偶然地

例题精讲

语法：介词by的用法

例1.根据提示完成句子

1. — How do you learn English?

— I learn ________________________ (通过小组学习).

2. —Do you learn English ________________________ (通过大声阅读)?

—Yes, I do. It helps my pronunciation.

3. —How can I read faster?

—You can read faster ____________________ (通过按照意群读的方式).

4. —How can I improve my pronunciation?

—One way is ________________________ (通过听录音).

5. I enjoy practicing my English ___________________(和同班同学交谈). 【答案】

by studying with a group

by reading aloud

by reading word groups

by listening to tapes

by talking with my classmates

【解析】

题干解析: