现在完成时公开课学案Gary

Unit 6 Ancient stories Grammar 学案姓名：____________ 班级：____________学习目标：掌握“现在完成时”的构成及使用

学习重点：现在完成时的基本概念及构成

学习难点：现在完成的用法

观察一：请仔细观察下列两个句子。

1. I have not laughed like this since my childhood.

2. The Greeks have tried to capture our city for ten years.

思考一：1. 现在完成时表达的含义：

1）表示或的动作造成的影响或结果

E.g. I have just washed my car.（车很干净了）

2）表示过去已经开始并到现在并将会持续的动作或状态.

E.g. He has learned English since 2001.（我还在继续学习英语）

2. 现在完成时的构成：_____________________________________

观察二：请仔细观察以下句子

They have left a huge wooden horse.

思考二：现在完成时的肯定句，否定句，疑问句分别是怎样构成的？

★总结：过去完成时态的构成：

肯定式：___________________________

否定式：___________________________

疑问式：___________________________

肯定回答____________________ 否定回答______________________

练习一、按要求改变句子。

1.She has done her homework. (改否定句)

2.She hasn’t told us the news yet. (改肯定句)

3.The rain has already stopped. (改一般疑问句)

(1)一般动词，在词尾直接加“”。

work---worked---worked , visit---visited---visited

(2)以“ e ”结尾的动词，只在词尾加“”。

live---lived---lived

(3)以“辅音字母 + y ”结尾的动词，将 "y" 变为 "i" ，再加“”。

study---studied---studied , cry---cried---cried

(4)重读闭音节结尾，末尾只有一个辅音字母，先双写该辅音字母，再加“”。stop---stopped---stopped , drop---dropped--dropped

★注意：规则动词的过去分词的变化与过去式是一样的!

练习二、写出下列动词的过去式和过去分词

Work ______ ______

Live ______ ______

Stay ______ ______

Stop ______ ______

Clean ______ ______

Study ______ ______

★不规则动词

动词不规则变化需要大家去熟记，可参考书本141-142页的表格加以熟记！

三、现在完成时的用法:

1)现在完成时表示过去发生的动作,并对现在有影响。

Someone has broken the window. (窗户现在是坏的)

I have lost the key. (我现在没有钥匙)

I haven’t read that book . (不了解书的内容)

I have cleaned my hands. (手是干净的)

What has just happened to him ?.

What has just happened to her ?

练习三、翻译以下句子

1、你已经找到你的书了吗? (find-found your book)

2、他们已经在这个城市建了许多房子. (build-built many buildings)

3、Judy还刚到达. (arrive-arrived)

2)现在完成时表示从过去一直持续到现在的动作或状态。

She has learned English 5 years.

He has lived in Beijing he was born .

Have you stayed here 3 o’clock?

常与for, since引导的时间短语或从句连用.

for+ 时间段

since+ , since+

★since: (自…以来)

1)since+时间点

He has stayed here since （五点钟）.

2)since+ 时间段+ ago

He has stayed here since （五个小时前） .

3)since+ 从句(从句用一般过去时)

She has taught English since （自从他来这里）.

★for: (长达）

for+ 时间段

He has kept the book （长达两周时间）.

练习四、用for 或since填空

1、Mr. Brown has had his TV ________ 15 years.

2、I’ve taken driv ing lessons _________ last month.

3、My sister has had her cell phone ________ a month .

4、My friends haven’t visited me ___________ my birthday.

5、We haven’t used our car ________ a long time .

6、She hasn’t had a good cup of coffee _________ years.

7、Tom has worn glasses _________ he was 7 years old.

总结1、Translate them into English.

1.我自从2012年以来就在建文中学读书。

2.他自从两年前就住在这里。

3.我自出生以来就住在深圳。

4.他学习英语将近十年了。

总结2、欣赏现在完成时动画教学

Homework:

1.将课本141页的动词的原型，过去式，过去分词按照以下分类：AAA AAB ABB ABA ABC

2.完成宝典训练第六单元第四天语法专题

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