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Unit 5 语法分层练习 (C 层基础卷)
— 答案与逐题解析
班级: ________ 姓名: ________ (共30题全解)
一、单项选择 (答案速查)
1 2 3 4 5
B B A A B
6 7 8 9 10
B A B B C
一、单项选择 (逐题解析)
1. B 解析：主语 I 配合 was，last night 是过去时。
2. B 解析：The students 复数配合 were。
3. A 解析：at this time yesterday 是过去进行时标志，用 was doing。
4. A 解析：两边都在进行，表示"一边...一边..."，用 while。
5. B 解析：He 配合 was，called 是过去时。
6. B 解析：raining 暗示进行时，it 配合 Was。
7. A 解析：后文说"正在打篮球"，说明前文"没在踢足球"，用 weren't。
8. B 解析：met 是瞬间动作，用 when 引导。
9. B 解析：Look! 是现在进行时标志，用 is playing。
10. C 解析：At 5:00 yesterday... 是过去具体时刻，用 were having。
二、动词 ing 形式 (答案速查)
1 2 3 4 5
doing playing having writing sitting
6 7 8 9 10
running lying studying shopping listening
二、动词 ing 形式 (解析)
规则1 (直接加): doing, playing, studying, listening (listening非重读闭音节)。
规则2 (去e加ing): having, writing。
规则3 (双写): sitting, running, shopping (重读闭音节)。
规则4 (ie变y): lying。
三、完成句子 (答案速查)
1 2 3 4 5
was doing were doing was reading Were sleeping was raining
16 7 8 9 10
wasn't watching was waiting were dancing were shopping were doing
三、完成句子 (解析)
1. I was doing (then标志)。
2. were they doing (they复数)。
3. Tom was reading (单数)。
4. Were you sleeping (you配合were)。
5. It was raining (天气用it)。
6. He wasn't watching (否定)。
7. I was waiting。
8. The girls were dancing (复数)。
9. We were not shopping。
10. What were you doing。
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