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1. A lot of vegetables help you to keep in good health.

A lot of = lots of = many/ much 许多

keep in good health = keep healthy = stay healthy

keep + 形容词 表保持某种状态

Keep quiet! The baby is sleeping.

那婴儿正在睡觉，保持安静!

We must keep our classroom clean.

我们必须保持我们的教室干净。

2. 注意 sometimes 与几个形似的词的区别。

(1) sometime 是副词，意为“在某个时候;某时”

Will you come again sometime next week?

下周的某个时候你会再来吗?

She was there sometime last year.

她去年某时去过那。

(2) some time 是名词词组，意为“一段时间”，做时间状语用

I will stay here for some time.

我将在这呆一段时间。

He worked for that company for some time.

他为那家电脑公司工作了一阵子。

(3) some times 是名词词组，意为“几次，几倍”

I met him some times in the street last month.

上个月我在街上遇到他好几次了。

The factory is some times larger than that one.

这间工厂比那间大好几倍。

(4) sometimes 是频度副词，意为“有时”

He sometimes goes skateboarding on weekends.

他有时周末去滑滑板。

3. That sounds interesting. 那听起来有趣。

look(看起来)，sound(听起来)，smell(闻起来)，taste(尝起来)，feel(觉得)，seem(好象)，grow(变得) ,　get(变得)等词在英语中可用作系动词，后跟形容词作表语。

It tastes good. 这味道好。

The music sounds very sweet.

这音乐听起来很入耳。

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