长难句解析(三)

A. Some colors have even been associated with changes in blood pressure.

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1. be associated with  和……联系在一起，与……有关

    associated  [əˈsoʊʃieɪtɪd]

I don't want to be associated with your scheme. I'm contracting out.

我不想参与你们的计划。我要退出。

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2. change

(1) change into 变成，兑换

At a certain temperature, a solid begins to change into a liquid.

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Could you change some RMB into American dollars for me?

你能帮我把人民币兑换成美元吗？

(2) change  换衣服

Give me a minute to change.

给我一分钟换衣服。

I went to my dressing room to change.

我到我的更衣室去换衣服。

(3) 零钱

The change is yours.

这是你的零钱。

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3. blood pressure  血压

(1) blood  [blʌd]

(2) pressure  [ˈpreʃər]

The doctor will monitor your blood pressure.

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B. Therefore, it's important not to believe everything you hear about the effects of color.

1. therefore  [ˈðerfɔ:r]  因此

2. 句型: It is + 形容词 + to do sth.

It's important to know where to place the stresses.

It's healthy to eat vegetables.

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上面的例句里，it是什么？(形式主语)

【思考】It's important to know where to place the stresses. 这句话里真正的主语是什么？

答案：to know where to place the stresses

3. 句型: It is + 形容词 + for sb. to do sth.

It is healthy for me to eat vegetables.

对我来说，吃蔬菜很健康。

【两种否定形式】

It's NOT healthy to eat vegetables.

吃蔬菜不健康。

It is healthy NOT to eat vegetables.

不吃蔬菜健康。