A. Some colors have even been associated with changes in blood pressure.
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。
2. change
(1) change into 变成，兑换
At a certain temperature, a solid begins to change into a liquid.
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。
3. blood pressure 血压
(1) blood [blʌd]
(2) pressure [ˈpreʃər]
The doctor will monitor your blood pressure.
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.
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。
