6．should 为情态动词，其后应该加动词原形，因此答案为have.
四、 答案： 1. help, to 2. tells, to 3. try to 4. be, make 5. important to
解析： 1. 本题考查动词短语help sb. to do sth. （帮助某人做某事）的用法，答案为help, to.
2. "好好学习" 我们理解为是父母经常对我们的嘱咐，应该用一般现在时，tell sb. to do sth. 意
为让某人做某事，答案为tells, to。
3. 本题考查动词短语try to do sth. 意为: 尽量/努力/试图做某事, 所以答案为try to.
4. 表示疲劳要用系表结构be tired. will 为助动词, 其后应该加动词原形，表示某事物使得某种情况发生, 其中的"使得" 应该用动词make 来表示，因此答案为be, make.
5. 本题考查固定句型It's...to do sth. 例如: It's good to help others.
It's bad for your eyes to read in bed. 等。因此本题答案为important to.
五、 He should finish homework on time every day. He shouldn't watch TV every night. He shouldn't play computer games until midnight. He should watch TV after he finishes homework. And he should play computer games once a week only on Saturday evening. I think he can become a good boy.
【知识拓展天地】 下列对话中，后面划有横线的一行均有一处错误，请找出错误，并把正确的答案写在横线上。 A: What's the wrong with you, young man? 1. ____
B: I'm not feel well and I'm very weak. 2. ____
I can't do some work, doctor. 3. ____
A: Do you have headache? 4. ____
B: No, I don't.
A: Do you sleep well in night? 5. ____
B: Yes, I sleep very well.
A: Did you eat breakfast every morning? 6. ____
B: No, I don't. And I eat only a little foods 7. ____
of lunch and supper because I want to 8. ____
keep thin.
A: Oh, I see. There's much nothing wrong with you. 9. ____
You need eat more food and have three meals 10. ____
a day. And do some exercises every day. 11. ____
Then you'll turn better soon. 12. ____
【答案及解析】 1. wrong改成matter 或去掉the.
2. feel改为feeling.
3. some改为any. 此句是否定句。
4. headache 前加a。have a headache 是习惯用法，表示“头痛”。
5. in 改为at。 at night是习惯用法，表示“在夜间”。
6. Did 改为Do。 有时间状语every morning, 应该用一般现在时。
7. foods 改为food. food 作食物讲时是不可数名词。
8. of 改为for。 这是习惯搭配。
9. much nothing 改为nothing much。nothing是不定代词，修饰语形容词应该放在其后。
10. need 后加to。在肯定句中，need 一般用作实义动词，故后跟动词时要加to.
11. exercises 改为exercise。exercise与do 搭配表示“进行体育锻炼”时，为不可数名词。
12. turn 改为get。 表示“身体健康状况变好”时，常用动词get, 不用turn.
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