七、句型转换。
1. We have three PE lessons in a week.（对画线部分提问）
PE lessons do you have in a week?
2. You should go to bed early.（改为否定句）
You go to bed early.
3. Can I help you?（写出同义句）
can I do for you?
4. I want a toy train.（改为一般疑问句）
you a toy train?
5. We often draw in our art club.（对画线部分提问）
do you often do in your art club?

1. How; many
2. shouldn't
3. What
4. Do; want
5. What

1. 画线部分three是可数名词的数量，询问可数名词的数量要使用固定疑问短语How many，因此这两个空填How和many。
2. 原句含有情态动词should，改为否定句时直接在情态动词后加not，should not的缩写形式是shouldn't。
3. "Can I help you?"是服务场景的常用问句，它的标准同义表达就是"What can I do for you?"，此处填What。
4. 原句是一般现在时，谓语动词want是实义动词，改为一般疑问句需要借助助动词Do放在句首，后面的实义动词保持原形want。
5. 画线部分draw是具体的动作，询问做什么事情要使用疑问词What，此处填What。

八、连词成句。
1. many, science, do, How, you, lessons, have(?)

2. should, go, to, bed, You, early(.)

3. want, I, toy, train, a(.)

4. in, Don't, eat, class(.)

5. help, Can, you, I(?)

1. How many science lessons do you have?
2. You should go to bed early.
3. I want a toy train.
4. Don't eat in class.
5. Can I help you?

1. 本题考查特殊疑问句的结构，提问可数名词数量用固定搭配How many，后接名词短语science lessons，再接助动词do、主语you和谓语have，组成正确问句。
2. 本题考查含情态动词should的陈述句，主语You放在句首，情态动词should后接固定短语go to bed，副词early放在句末修饰动作。
3. 本题考查主谓宾结构的陈述句，主语I放在句首，谓语是动词want，宾语是名词短语a toy train。
4. 本题考查否定祈使句的结构，Don't后接动词原形eat，地点状语in class放在句末。
5. 本题考查含情态动词Can的一般疑问句，情态动词Can放在句首，后接主语I、谓语help和宾语you。

九、阅读理解。
Passage 1
My school life
Hello! I'm Lily. Welcome to our school. We have many lessons. We have three English lessons in the language lab every week. We also have two music lessons. We often play the piano in the music club. We also have an art club. We draw and paint pictures there. We must listen to the teacher carefully in class. We shouldn't be late for school. We mustn't eat in class. We should go to bed early, too.
阅读短文,判断正(T)误(F)。
()1. Lily has three English lessons in a week.
()2. They play the piano in the art club.
()3. They must eat in class.
()4. They shouldn't be late for school.
()5. They have two music lessons.

1.T 2.F 3.F 4.T 5.T

我们可以对照短文内容逐题判断：
1. 短文中明确提到"We have three English lessons in the language lab every week."，和题目表述一致，该句正确。
2. 短文中说明"We often play the piano in the music club."，并非在美术俱乐部弹钢琴，该句错误。
3. 短文中提到"We mustn't eat in class."，意思是禁止在课堂上吃东西，和题目"必须在课堂吃东西"表述不符，该句错误。
4. 短文中直接给出"We shouldn't be late for school."，和题目表述完全一致，该句正确。
5. 短文中写明"We also have two music lessons."，和题目表述相符，该句正确。