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Unit 5 语法分层练习 (A 层挑战卷)
— 答案与逐题解析
班级: ________ 姓名: ________ (共35题全解)
一、单项选择 (答案速查)
1 2 3 4 5
B A B B B
6 7 8 9 10
A B C B B
11 12 13 14 15
C B A B C
一、单项选择 (逐题解析)
1. B 解析：打电话是过去的时间点，当时"正在花园工作"，用过去进行时 (was working)。
2. A 解析：While 引导的时间状语从句通常接进行时态，表示"正在变红"的过程。
3. B 解析：经典的"when"打断句型。主句"正在走"(was walking)是背景，when引导突发动作。
4. B 解析：没听见是因为当时"正在听音乐"，强调动作正在进行。
5. B 解析：不能出去是因为当时"正在做作业"，用过去进行时 was doing。
6. A 解析：报警 (called) 是瞬间动作，发生在参观博物馆 (visiting) 的过程中。
7. B 解析：Know 是状态动词，不用于进行时，用一般过去时 didn't know。
8. C 解析：离开家时，雨"正在下"，强调场景背景，用 was raining。
9. B 解析：While 连接两个并列的持续性动作(singing/playing)，用 was playing。
10. B 解析：When 引导的时间状语从句通常用一般过去时(got)表示短暂动作的发生。
11. C 解析：Wear 表示穿着的状态，当时"正穿着"，用过去进行时 was wearing。
12. B 解析：While 引导持续性动作，在"正在读书"的过程中睡着了。
13. A 解析：丢钥匙 (lost) 是瞬间动作，发生在正在散步 (was walking) 的过程中。
14. B 解析：Happen 是非延续性动词，且 last night 是过去时间，用一般过去时。
15. C 解析：At 7:00 yesterday evening 是过去具体时刻，用过去进行时 was having。
二、语篇填空 (答案速查)
1 2 3 4 5
was blowing was lying was knocking felt was walking
6 7 8 9 10
saw was playing was making was having took
二、语篇填空 (解析)
11-3. 风正在刮(was blowing)，我正躺着(was lying)，似乎有人正敲门(was knocking)，均为背景描写。
4. felt (感到害怕是心理状态的瞬间变化)。
5. While 引导持续动作 (was walking)。
6. see 是感官动词，结果是用一般过去时 saw。
7-9. 描述猫的动作背景：正在玩(was playing)，风正在响(was making)，猫正在玩乐(was having)。
10. took (深吸一口气是短暂动作)。
三、汉译英 (参考答案与解析)
1. Three buses passed by while we were waiting for the bus.
2. My family was having dinner when the neighbor called.
3. People were asking each other what happened, while some were starting to run.
4. What were you doing at this time last night?
5. I was cooking when the telephone rang.
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