Ⅳ. Read and choose the right answers.
为下列各题选择恰当的选项。
() 1. What are you ?
A. do
B. doing
C. does
() 2. I'm Chinese.
A. speaking
B. say
C. speak
() 3. you doing kung fu?
A. Is
B. Am
C. Are
() 4. They are walking a bridge.
A. at
B. in
C. on

1. B
2. A
3. C
4. C

1. 题目是现在进行时的特殊疑问句，其结构为"What+be+主语+doing?"，所以选择B选项"doing"。
2. 句子表达的是正在说汉语，"be+doing"是现在进行时的结构，"speak"的现在分词是"speaking"，因此选A选项"speaking"。
3. 主语"you"对应的be动词是"are"，在现在进行时的一般疑问句中，要把"are"提到句首，所以选C选项"Are"。
4. "在桥上"要用介词"on"，"on the bridge"是固定搭配，故选择C选项"on"。

Ⅴ. Choose and complete the sentences.
选择恰当的单词填空，补全句子。
| clean | am | are | doing |
| --- | --- | --- | --- |
1. Tom and Zhang Peng doing homework.
2. I drawing a picture.
3. Robin is kung fu.
4. Keep your room .

1. are
2. am
3. doing
4. clean

1. 主语"Tom and Zhang Peng"为第三人称复数，be动词用are，所以填are。
2. 主语I后使用be动词am，所以填am。
3. 句子是进行时态，"is"后用doing，与kung fu构成"doing kung fu"表示练功夫，所以填doing。
4. "keep sth. clean"为固定搭配，表示保持某物清洁，所以填clean。

Ⅵ. Read and match.
读一读，连线。
1. He is talking in the library. A. Keep to the right.
2. We are playing a game. B. Talk quietly.
3. She is colouring at her desk. C. Take turns.
4. They are walking on a bridge. D. Keep your desk clean.

1. B 2. C 3. D 4. A

本题可根据各场景的行为规范来进行连线匹配。
1. “He is talking in the library.” 意思是他正在图书馆说话。在图书馆需要保持安静，所以应和 “Talk quietly.”（小声说话）连线。
2. “We are playing a game.” 意思是我们正在玩游戏。玩游戏时应该轮流进行，所以和 “Take turns.”（轮流）连线。
3. “She is colouring at her desk.” 意思是她正在课桌上涂色。要保持课桌干净，所以和 “Keep your desk clean.”（保持你的课桌干净）连线。
4. “They are walking on a bridge.” 意思是他们正在桥上走。在桥上走要靠右行，所以和 “Keep to the right.”（靠右行）连线。