2025年怎样学好初中英语八年级英语上册沪教版五四制
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A1 Complete the sentences with when, as, before, after or until. 用when, as, before, after或until完成句子。
8. We need to pass a test
before
we get a driver's licence.
9. You can eat the dessert
after
you finish your vegetables on the plate!
10. The baby cried
until
her mother picked her up.
答案：8. before
解析：“在拿到驾照之前我们需要通过考试”，before表示“在……之前”，符合逻辑，拿到驾照前要通过考试。
9. after
解析：“吃完盘子里的蔬菜之后你才能吃甜点”，after表示“在……之后”，符合语境。
10. until
解析：“婴儿一直哭，直到她妈妈抱起她”，until表示“直到……为止”，即妈妈抱起她之前一直在哭，符合句意。
A2 Correct the mistake in each sentence. 仿照示例改正句子中的错误。
1. When I
finish
my homework, I will watch TV. → ________
2. She didn't go to bed until she
finished
her project. → ________
3. After he arrived, we
started
the meeting. → ________
4. I
will wait
here until the rain stops. → ________
5. Before the teacher came, the students
were
talking loudly. → ________
6. When he was young, he
played
basketball every day. → ________
答案：1. finish
解析：when引导的时间状语从句，主句用一般将来时，从句用一般现在时，所以will finish改为finish。
2. finished
解析：until引导的时间状语从句，主句用一般过去时，从句也用相应的过去时态，will finish改为finished。
3. started
解析：after引导的时间状语从句，从句用一般过去时，主句也用一般过去时，start改为started。
4. will wait
解析：在 “until” 引导的时间状语从句中，遵循 “主将从现” 的原则，即主句用一般将来时, wait改为will wait。
5. were
解析：before引导的时间状语从句，从句用一般过去时，主句也用一般过去时，are改为were。
6. played
解析：when引导的时间状语从句用一般过去时，主句也用一般过去时，plays改为played。
A3 Rewrite the sentences by using the given conjunctions. 仿照示例用所给连词改写句子。
1. The students cleaned the classroom. Then they went home. (after)
After the students cleaned the classroom, they went home.
2. I will finish my work. I will go to the park. (when)
________
3. The film will start. Turn off your phone. (before)
________
4. He stayed at the office. The meeting ended. (until)
________
5. I saw Lucy. I was getting on the underground train. (as)
________
6. The train left. We reached the platform. (after)
答案：2. When I finish my work, I will go to the park.
解析：用when连接，“当我完成工作时，我会去公园”，when引导时间状语从句，主句用一般将来时，从句用一般现在时。
3. Turn off your phone before the film starts.
解析：用before连接，“在电影开始前，关掉你的手机”，before引导时间状语从句，主句是祈使句，从句用一般现在时表将来。
4. He stayed at the office until the meeting ended.
解析：用until连接，“他待在办公室直到会议结束”，until表示“直到……为止”。
5. I saw Lucy as I was getting on the underground train.
解析：用as连接，“当我正在上地铁时，我看到了露西”，as表示“当……时”，强调动作同时进行。
6. After we reached the platform, the train left.
解析：用after连接，“在我们到达站台之后，火车离开了”，after引导时间状语从句，主句和从句都用一般过去时。
A4 Put the sentences into English. 翻译下列句子。
1. 我做完作业后，会去骑自行车。
________
2. 直到妈妈回家，我才开始吃饭。
________
答案：1. After I finish my homework, I will go cycling.
解析：“做完作业后”用after引导时间状语从句，“我会去骑自行车”主句用一般将来时，从句用一般现在时，“骑自行车”译为go cycling。
2. I didn't start eating until my mother came home.
解析：“直到……才”用not...until...结构，“开始吃饭”译为start eating，“妈妈回家”是过去发生的动作，用一般过去时came home，主句也用一般过去时，所以是I didn't start eating until my mother came home。
