在高一英语学习中，语法填空是一项重要的练习形式，它不仅能帮助学生巩固所学语法知识，还能提升语言运用能力。以下是一组精心挑选的语法填空练习题，每题都附有详细解答，希望对同学们的学习有所帮助。

练习题

1. The teacher said that the earth ________(go) around the sun.

2. She was so tired that she fell asleep as soon as she ________(lie) down on the bed.

3. If it ________(rain) tomorrow, we will have to stay at home.

4. By the time he arrived, the meeting ________(begin).

5. It is important for us ________(learn) English well.

6. He promised that he ________(help) me with my homework.

7. They are discussing how ________(improve) their English.

8. I don't know if he ________(come) to the party.

9. She has been working here since she ________(graduate) from university.

10. We should try our best ________(make) progress every day.

答案解析

1. goes - 从句中的主语是第三人称单数，因此动词要用第三人称单数形式。

2. lay - 根据句意，这里需要过去式。

3. rains - 条件状语从句中，主句是一般将来时，从句用一般现在时表将来。

4. had begun - by the time引导的时间状语从句中，主句通常使用过去完成时。

5. to learn - 形式主语结构中，真正的主语是不定式短语。

6. would help - promise后的宾语从句中，根据主句时态，从句用过去将来时。

7. to improve - how+不定式结构作宾语。

8. comes - if引导的条件状语从句中，主句是一般将来时，从句用一般现在时表将来。

9. graduated - since引导的时间状语从句中，主句使用现在完成时，从句使用一般过去时。

10. to make - 应该努力做某事，固定搭配。

通过这些练习，希望能帮助大家更好地掌握语法知识。语法填空不仅考验语法知识，还考察对上下文的理解能力，希望大家多加练习，提高英语水平。