一、按要求转换句型。
1. The birds fly.（改为现在进行时）

2. Tim is counting insects.（对画线部分提问）

3. Is the rabbit jumping?（作肯定回答）

4. I go to school at 7:30 a. m.（对画线部分提问）

5. Can birds fly?（作肯定回答）

1. The birds are flying. 2. What is Tim doing? 3. Yes, it is. 4. When do you go to school? 5. Yes, they can.

1. 现在进行时的结构为“am/is/are + 动词的现在分词”，主语the birds是复数，be动词用are，fly的现在分词是flying，故转换为The birds are flying. 2. 画线部分是具体动作，用疑问词What提问，现在进行时的特殊疑问句结构为“What + be动词 + 主语 + doing?”，主语Tim是第三人称单数，be动词用is，故为What is Tim doing? 3. Is开头的一般疑问句肯定回答结构为“Yes, 主语 + is.”，问句主语the rabbit用代词it代替，故为Yes, it is. 4. 画线部分是时间，用疑问词When提问，一般现在时的特殊疑问句，主语I变you，需加助动词do，故为When do you go to school? 5. Can开头的一般疑问句肯定回答结构为“Yes, 主语 + can.”，问句主语birds用代词they代替，故为Yes, they can.

二、把下列句子重新排列顺序，组成一段对话。
()Hey! What are you doing? Are you eating lunch?
()No, we aren't. We are doing an experiment.
()What experiment?
()Come and have a look at the ants.
()That's interesting.

1、2、3、4、5

这段对话遵循日常交流的逻辑顺序：首先由一人发起提问（第1句），对方否定提问并说明正在做实验（第2句），接着提问者追问是什么实验（第3句），对方邀请来看蚂蚁（第4句），最后提问者评价有趣（第5句），因此正确排序为1、2、3、4、5。

三、根据短文内容，判断下列句子正误，正确的写“T”，错误的写“F”。
Betty and Kitty are twins. They're 12 years old. They look the same. But they have different(不同的) hobbies(爱好). Betty likes collecting stamps(集邮). She has many beautiful stamps. They're from different cities(城市) and countries(国家). But Kitty likes growing flowers. The flowers are all very beautiful. Betty and Kitty both like reading books. Betty likes reading storybooks. But Kitty likes reading science books. On Sunday, they usually ride bikes to the park. They can play with their friends there. Sometimes their parents go there, too.
()1. Betty is Kitty's sister.
()2. Betty likes growing flowers.
()3. Kitty likes reading storybooks.
()4. They're twelve years old.
()5. They usually take a bus to the park on Saturday.

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

1. 短文第一句表明Betty和Kitty是双胞胎，双胞胎属于姐妹关系，故该句正确。2. 短文提到Betty喜欢集邮，Kitty喜欢种花，故该句错误。3. 短文提到Kitty喜欢读科学书，Betty喜欢读故事书，故该句错误。4. 短文明确说明她们12岁，故该句正确。5. 短文提到她们周日通常骑自行车去公园，并非周六坐公交，故该句错误。