(1) 含有suggestion 的主语从句、表语从句、同位语从句、定语从句中主句谓语用 should 型虚拟式。
We agree to his suggestion that the book (should) be published once more .
(2) suggestion 的搭配有：make a helpful / timely suggestion 作出有益（适时）的建议。act on / at one's suggestion = act on / at the suggestion of sb 按照某人的建议做。
(3) suggestion , advice 和 opinion
advice 多指根据自己的学识和经验提出来的供人参考的意见。suggestion 指为改进工作、解决问题而提出的建议，比 advice 委婉。opinion 是日常用语，指对某事的观点、想法。另外，advice 是不可数名词。
Advice is seldom welcome . (谚语) 忠言逆耳。
In our opinion , these trees must be cut down at once .
We have decided to pay more attention to their suggestions .
（三）单元词组思维运用
1. at the doctor's 在诊所
At the doctor's you can have your eyesight tested .
2. visit a doctor = see a doctor 看医生，看病，就诊
He had to visit a doctor because of his heart trouble .
3. a piece of bread 一块面包
4. a bit 有点儿（修饰形容词）
These apples are a bit green . 这些苹果有些生。
5. have a good rest 好好休息一下
6. in four hours' time 四小时后，四小时内
Take two pills now and two more in fours' time .
They will arrive in two hours' time .
7. a diet of 一种……的食物
Every person needs water and a diet of healthy foods .
8 . different kinds of 不同种类的
There are different kinds of moon cakes on Mid-Autumn Day .
Different kinds of book ( = Different kinds of books = Books of different kinds ) are on show in the book fair .
9. in calories 以卡来计算
The energy is measured in calories . 这种能量以卡来计算。
10. be asleep 睡者（强调状态）。fall asleep 睡着（强调动作）
11. burn up 烧掉，烧毁；消耗掉。
While you are walking , your body is burning up 100 calories an hour .
If the satellite returns to the earth too fast , it burns up on the way .
The house burned up before the firemen got there .
12. as much as 像……那样多；多达；到达……的程度。as much as 用于不可数的物体，而 as many as 则用于可数的物体。该结构还可以变化为：as much + 不可数名词 + as 或者 as many + 可数名词 + as 的形式。
Here is a bottle of ink . You may use as much as you need .
The average distance of the sun from the earth is as much as 150 million kilometres .
太阳与地球的平均距离达一亿五千万公里。
You should rest as much as possible .
In the countries of Black Africa , there are as many as 700 languages .
When working there , she could earn as much as 500 dollars a week .
He is strong enough to carry as much as 200 jin .
13. be considered (to be ) + 名词或者形容词"被认为是……"
14. be rich in 含有大量的；充满
This kind of fish is rich in vitamins A and D .
A large stretch of land rich in coal is called a coal field .
注意其反义词组是：be low in 含量低。be high in 含有大量的……
15. too much 过于多的（修饰不可数名词、作主语、作宾语、作表语）。而much too修饰形容词和副词。
She gets up much too early , because she has too much work to do every day .
16 . take exercise 运动；锻炼
You need to take more exercise if you want to keep healthy .
She ate too much and did not take any exercise .