牛津上海版高一上学期Unit1基础语法讲解

高一上学期U1基础语法讲解

一、本节内容

（一）过去完成时

1.过去完成时：

✈1).概念：过去发生或已经完成的动作对现在造成的影响或结果，或从过去已经开始，持续到现在的动作或状态。

✈2).时间状语：recently, lately, since…for…,in the past few years, etc.

✈3).基本结构：have/has + done

✈4).否定形式：have/has + not +done.

✈5).一般疑问句：have或has提前

概念：过去完成时表示在过去某一时间或动作之前已经发生或完成了的动作，即过去的过去（past-in-the-past ）

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那时以前那时现在

构成：过去完成时由"助动词had + 过去分词"构成，其中had 通用于各种人称。

They had already had breakfast before they arrived at the hotel.

She had finished writing the composition by 10 ：00 this morning.

2、过去完成时的判断依据:由时间状语来判定

✈ 1 ）by + 过去的时间点。

Eg: I had finished reading the novel by nine o'clock last night.

✈ 2 ）by the end of + 过去的时间点。

Eg: We had learned over two thousand English words by the end of last term.

✈ 3 ）before + 过去的时间点。

Eg: They had planted six hundred trees before last Wednesday.

3.课堂练习:

一.用动词的适当形式填空

1. We _____________ (paint) the house before we ______________ (move) in.

2. That rich old man _____________ (make) a will before he _____________ (die).

3. They _____________ (study) the map of the country before they ________ (leave).

4. The robbers _____________ (run away ) before the policemen_______ (arrive).

5. I __________ (turn off) all the lights before I ____________ (go) to bed.

6. Paul __________ (go) out with Jane after he __________ (make) a phone call.

7. Tom __________ (say) he ___________ (read) the book twice.

8. Our plan ____________ (fail ) because we _____________ (make) a bad mistake.

9. When the chairman ______________ (finish) speaking, he _____________ (leave)the hall.

10.The Reads __ ______ (have) lunch when I ________________(get) to their house.

二．句型转换

1．I had sold the ticket when she came.（改否定句）

2.She had sung a song to us before she danced.（改否定句）

3.They began to climb the mountain after they had bought all the food and drinks.（否定）

4.By 10:00 a.m, I had been very hungry. （改一般疑问）

5.Lucy had already completed the project when I arrived.（改一般疑问）

6.By the time he got to the airport, the plane had taken off. （改一般疑问）

7..He had broken his arm when I saw him.（对划线部分提问）

8.When he had read the note, he ate it. （对划线部分提问）

9..Jack didn’t go to the cinema because he had seen the film. （对划线部分提问）

10.We had had the toys for ten years before we gave them to the child. （对划线部分提问）

三.Keys:

一.用动词的适当形式填空

1. had painted... moved

2. had made ... died

3. had studied…left

4. had run away..arrived

5. had turned off …went

6. went …had made

7. said …had read 8 failed …had made 9. (had) finished …left 10. were having/had had …got

1．I hadn't sold the ticket when she came.

2. She hadn't sung a song to us before she danced.

3. They didn't begin to climb the mountain after they had bought all the food and drinks.

4. Had you been very hungry by 10:00 a.m?

5. Had Lucy completed the project when I arrived yet?

6. Had the plane taken off by the time he got to the airport?