2020高考英语总复习 经典易错题会诊与试题预测 第二部分单项填空 考点10副词性从句

第二部分 单项填空

考点 10 副词性从句

时间状语从句和原因状语从句的运用 条件状语从句和结果状语从句的正确运用 让步状语从句和方式状语从句的运用 比较状语从句和目的状语从句的运用 till和until的用法区别 though和ahhough的用法

as和though引导让步状语从句的语序

经典易错题会诊

命题角度 1 时间状语从句和原因状语从句的运用 1.(典型例题)—Did Jack come back early last night? —Yes. It was not yet eight o’clock __ he arrived home. A. before B. when C. that D. until [考场错解] C

[专家把脉] 本题很多考生都以为是强调句，选that.事实上本题是一个when引导的时间状语从句，句意为“他回家的时候不是八点钟”。 [对症下药] B

2.(典型例题 )That was really a splendid evening,It’s years I enjoyed myself so much.

A. when B. that C. before D. since [考场错解] A

[专家把脉] 很多考生都选A，认为是由when引导的一个时间状态语从句。本句是

状语从句，但并不能用 when引导，而应该用since引导，此时since译为“从……起”，整句应该理解为“我多年未这么快乐过了”。 [对症下药] D

3.(典型例题苏)__ they heard the shout for help, they rushed out.

A. Immediately B. The moment C. The while D. All the above [考场错解] A或B

[专家把脉] 考生往往对the moment可以用来引导时间状语从句较熟悉，而忽略其他。事实上，immediately和while也可引导时间状语从句，此时immediately = as soon as. [对症下药] D

4.(典型例题北) It’s no wonder you’ve got a headache __ you drank so much last night.

A. though B. in case C. when D. while [考场错解] D

[专家把脉] 很多考生都选D项，把while理解成“然而”或“当……时候”，仔细分析本句就会发现空格处应填一个能引导原因状语的词，此时只有when合适，其意义相当于since，seeing that或consldering that. [对症下药] C

5.(典型例题京) He did not get up __ his mother came in. A. till B. until C. not until D. before [考场错解] B

[专家把脉] till(until)表示“一直到……”时，主句和从句都用肯定式；表示“直到……才”时，主句用否定式，从句用肯定式。 [对症下药] A 专家会诊

1.时间状语从句的引导词有:when，while，as， every time，the moment，

hardly...when，no sooner...than等。 2.使用时间状语从句时要注意下列几个词: as，while，When

as强调两个动作同时进行，动作通常是延续性的，且表示“一边……一边”；还可表示“随着时叵的推移”。例: He always sings as he walks.

As time went on,his theory proved to be correct.

when引导的时间状语从句中，其谓语动词可以是延续性的，也可以是非延续性的，有时还表示“就在那时”。例:

When the teacher came in, the students were reading aloud. When he stayed in America, he learned a lot of English. We were about to set out when it began to rain.

while在……期间，引导的从句的动作是延续性的，并侧重主从句的动作同时发生；有时while还表示转折关系“而”。例:

While his mother was cooking in the kitchen, the little boy fell asleep in the chair.

He is a worker,while his sister is a doctor.

原因状语从句的引导词有:as because,since,now that 等。 如:Now that you are all here,let’s reach a decision.

注意，for是并列连词，引导的是并列句，对前述内容作补充性说明。 考场思维训练

1 He always sings __ he walks.

A. when B. while C. as D. and 答案: C

解析:as强调动作同时进行。

2 __ the teacher came in, the students were fighting with each other.

A. While B. When C. As D. Since

答案: B

解析:when在本句中意为“当……时候”。

3 __ many boys were playing basketball on the playground, the gins were singing and dancing in the room.

A. When B. While C. Before D. As 答案: B

解析:while在本句中指主从句的动作几乎同时发生。 4 __ he walked along the street, he sang happily.

A. When B. While C. As D. That 答案: C

解析:when，while和as都表示“当…时候”讲，但when引导的从句的动作可同时

发生，也可先后发生。 用as和while时则表示动作同时发生。

5 __ a lot of people make mistakes in life, you’d better give him a chance.

A. Because B. Since C. As D. Because of 答案: B

解析:because表明直接或明确的原因。since和as 引导的从句强调的是结果，不是原因。另外，since在语气上比as要强。

命题角度 2 条件状语从句和结果状语从句的正确运用

1.(典型例题) It is known to all that __ you exercise regularly, you won’t keep good health.

A. unless B. whenever C. although D. if [考场错解] B

[专家把脉] 很多考生认为本题应该用whenever来引导时间状语从句，事实上分析本句结构和句意可知，it实际上是替代后面从句的，句子的真正结构为:_ you exercise regularly，you won’t keep good health。因此，应该用unless，句意为“除非你经常有规则地锻炼，否则不会有好身体的”。