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师梦圆初中英语教材同步人教版八年级下册Section A Grammar focus 4a—4c下载详情
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Step1 【导入】Warming up and lead in.

Ask and answer the questions to review Present Perfect Tense.

② Show them the past participle forms and let them sum up.

To help students remember the grammar.

Try to master the past participle forms.

Step2【导入】学习目标

1.理解现在完成时中for与since的用法

2. 理解短暂性动词向延续性动词的转换

3.have been in, have been to 与have gone to 的用法

Step3【练习】组内完成4a--4c

4a Rewrite the sentences using for or since

4b Fill in the blanks with correct forms of the verbs in brackets.

4c Fill in the questions and ask two students. Then complete the chart.

Step4【讲授】探究一

探究一、 学习for 和 since 在现在完成时中的应用

for后须接 “时间段”例如: He has learned English for five years.

(2)since后须接“时间点”例如:He has learned English since 1999。

(3)二者可以转换

for + 一段时间 = since + 一段时间 + ago

例如:He has been here for two months = He has been here since two months ago 。

用for 和since填空。

I have been a teacher ______ a year.

He has been at this school _______ 1992.

We have learned 1,000 English words _______ we came to this school

Step5【讲授】探究二、动词转换

leave — borrow — buy —

begin/start — die — catch a cold —

finish --- fall ill — get married— put on—

将下列句子变成现在完成时态

1.The old man died 4 years ago.

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