盘点知识（一）

一、重点词汇拓展。

1. easy adj. ----easily adv.容易地------difficult(反义词）困难的。

2. Tomato n. ---- tomatoes (复数）西红柿

3. Healthy adj. -----health n.健康------ unhealthy(反义词）不健康的--healthily adv.健康地

4. Always adv. ----never (反义词）从不

5. Woman n.------women（复数）女子

6. Happy adj.----unhappy (反义词）不快乐的；不幸福的----happily adv.快乐的；高兴地

7. Science n.科学----scientist n.科学家

8. Art n.----artist n.艺术家，画家

9. Week n.----musical adj.音乐的，爱好音乐的-----musical n.音乐家

1、 掌握重点句型

1. Let me (get) it.

2. We go to (the same) school and we (love soccer).

3. I love sports,but I ( don't play) them.----I only read novels.

4. It's (easy for me).

5. Liming asks the basketball (star), Yaoming,(about ) his (eating habits).

6. Let's( think about) the food.

7. I don't (to be fat).

8. (for) girls,we have (skirts in purple for) only $20.

9. Come and (buy )your clothes (at our great sale).

10. Do you want (to come to ) my birthday (party)?

11. We have come (interesting) and (fun things) for you.

二、重点词汇解析。

Hey,Helen,(Let's )go.(Unit5 p26)

考点分析：

1. Let sb. do sth.是一个以动词let为使役动词，意为"让"，常用结构为let sb.do sth.意为"让某人做某事"。此结构中sb.可以是名词，也可是代词。若是代词，要用宾格形式。

2. Let's do sth.结构常用来提出建议，意为："让我们。。。。。。"，表示否定时用"Let's not do sth."。要表示赞成，用Ok./All right./Good idea./That sounds good.等作答；若表示不赞成，用Sorry,I ....等作答。

[拓展]以Let's 开头的祈使句，其反意疑问句的附加部分用will you.

For example:

Let's not go to school on Sunday,shall we?

Let us go to school on Sunday,won't you?

3. need可作实义动词或情态动词，也可作名词。其用法区别如下：

（1） 实义动词。

意为"需要"。它有人称和数的变化（在变否定句和疑问句时需要借助动词）。

A：当主语是人时，接名词或动词不定式。即：need sth/need to sth.

B:当主语为物时，接名词或动名词形式。即：need sth/need doing sth.注意：need doing sth .=need to be done,具有被动意义。

For example:

He needs some books.

It's cold outside.You need to wear a sweater.

The tree needs water.

The tree need watering.=The tree need to be watered.

(2) 情态动词

意为"必要"。它没有人称和数的变化。不能单独充当谓语，必须和动词原形一起构成谓语。常用于否定句和疑问句中。

For example:

You needn't go this week.

-----Need I come tomorrow?

-----yes,you must./No,you needn't.

(3)名词

意为"需求；需要"。In (great) need of ;meet the needs of....

For example:

There's no need for you to try again.

The school is in great of textbooks.

【拓展分析】

（1） need后跟不定式，用于否定句时，意为"不必"，表示没义务或没必要做某事。如：You don't need to write right now.

（2） 在由must 引导的一般疑问句中，其肯定回答为：must。否定回答为：needn't或don't have to .如：

----Must I see the doctor now?

-----Yes,you must./No,you needn't/don't have to.是的，必须。/不，不必。

4. busy作形容词，意为"忙碌的，无暇的"。常用来修饰名词作定语或用在系动词之后作表语。For example:

His father is a busy man.

My teacher is always busy on Sunday.

含busy 的两个常用结构：

（1） be busy with sth.with后接名词。

My brother is busy with his homework.

(2) Be busy (in)doing sth.busy 后接动词-ing形式。

I am busy in mending my bike.