一、用所给词的适当形式填空。
1. Helen would like (swim) with me together.
2. — Would you like (some) soup? — No, I'd like (drink) some milk.
3. Do you want (play) football with him?
4. They plan (have) a picnic this Sunday.
5. — What can you do (keep) the air clean? — (keep) the city air clean, we can try (plant) more trees.
6. Bobby comes (help) the animals.
7. We can use the plastic bottles (make) toys.
8. — Do you often reuse the water (water) flowers? — Yes, I do.

1. to swim 2. some; to drink 3. to play 4. to have 5. to keep; To keep; to plant 6. to help 7. to make 8. to water

1. "would like"后接动词不定式，即"to+动词原形"，所以填to swim。
2. "Would you like..."表请求，用some；"I'd like"后接动词不定式，填to drink。
3. "want"后接动词不定式，填to play。
4. "plan"后接动词不定式，填to have。
5. 第一空表目的用不定式to keep；第二空作目的状语用不定式To keep；"try"后接动词不定式to plant。
6. "come"后接动词不定式表目的，填to help。
7. "use...to do sth"表示"用……做某事"，填to make。
8. "reuse...to do sth"表示"重复使用……做某事"，填to water。

二、句型转换。
1. Give me some bananas. (改为同义句)
Give some bananas .
2. He would like to drive the car. (改为同义句)
He the car.
3. I often reuse paper to make the paper plane. (对画线部分提问)
often paper for?

1. to me
2. wants to drive
3. What do you reuse

1. "Give sb. sth." 可转换为 "Give sth. to sb."，sb. 为 "me"，故填 "to me"。
2. "would like to do sth." 同义短语为 "want to do sth."，主语 "He" 是第三人称单数，"want" 用 "wants"，故填 "wants to drive"。
3. 画线部分 "to make the paper plane" 表目的，用 "What...for?" 提问，原句主语 "I" 变为 "you"，助动词用 "do"，动词 "reuse" 用原形，故填 "What do you reuse"。