Unit-8-Have-you-read-Treasure-Island-yet？教案

Section A 3 (Grammar Focus 4a-4c)

Step 1 Warm up

Read the following sentences we have seen.

Have you read Little Women yet?

Yes, I have./ No, I haven't.

Has Tina read Treasure Island yet?

Yes, she has. She thinks it's fantastic.

Have you decided which book to write about yet?

Yes, I have. I've already finished reading it. It was really good.

Step 2 现在完成时w W w .x K b 1.c o M

用法

1. 表示过去发生或已经完成的某一动作对现在造成的影响或结果。

e.g. -Have you had your lunch yet?

-Yes, I have. I've just had it. (现在我不饿了。)

2. 表示动作或状态从过去某一时刻开始，一直延续到现在，而且可能还要继续下去。

e.g. I haven't seen her these days.

I've known Bob for three years.

I've been at this school for over two years.

时间状语

already, yet, just, ever, never, before

构成

现在完成时是由"助动词have / has+ 动词的过去分词"构成的，规则动词的过去分词构成与过去式相同，不规则动词的过去分词则需逐个记忆。

动词的过去式的变化和过去分词的变化并不完全相同。我们对它们作了一个大致的分类。 (注：例子中单词的变化顺序为：动词原形 → 动词的过去式 → 动词的过去分词)

一、过去式和过去分词的变化相同