外研版九年级英语上册《Language in use》Wonders of the world PPT教学课件，共29页。
新课导入
Language practice
I visited the Giant’s Causeway two years ago.
It produces electricity for millions of people.
I’ve never seen it, so I’m not sure I agree with you.
I looked into the east — the sky was becoming grey.
You’ll get there in five minutes.
Am I going the right way?
新课导入
重要回顾
1. I think natural wonders are more interesting than man-made ones.
1) I think 为主句，后面是省略了连接词that的宾语从句。
2) ones 作代词，指代wonders。 ones 指代复数名词，同类不同物。
2.Far below me，the ground fall away and down to a river.
在我下方很远，地面沉降到下面深谷中的一条河里。
fall away 消失/疏远
新课讲解
一般现在时：表示目前经常性，习惯性，反复性的动作。
结构：主语是第三人称单数，即“谓语动词+s/es”； 反之则谓语动词用原形。
例如：I work / she works
标志词：sometimes, never, often, always，
usually, on Sundays,every day, in the morning等。
例句：My father works everyday.
—Does your father work everyday?
—Yes,he does.
My father doesn't work everyday.
一般过去时：过去某个时间里发生的动作或状态.
结构： 1.am/is → was are → were
2.谓语动词用过去式,规则变化+ed
标志词：…ago, yesterday, the day before yesterday, last week(year, night, month…), in 2008, just now, at the age of 5, one day, long long ago, once upon a time等。
例句 :He worked late yesterday.
—Did he work late yesterday?
—No，he didn’t.
He didn’t work late yesterday.
一般将来时：1.表示某人打算、计划做某事。
2.对将来的预测。
结构：1.计划: 主+be going to +动词原形
2.预测: 主+ will + 动词原形
标志词：tomorrow, the day after tomorrow ,next day(week, month, year…),soon, in a few minutes（in +一段时间）, from now on，in the future等。
例句：I will work in a hospital next month.
—Will you work in a hospital next month?
—No, I won’t.
I won’t work in a hospital next month.
现在进行时：表示正在发生或一段时间内正在发生的动作。
结构：主+be(am, is, are)+ v.-ing
标志词：now, at this time, these days, look, listen,at the moment, It’s seven o’clock 等。
例句：They are working now.
—Are they working now?
—No, they aren’t. =They aren’t working now.
过去进行时：表示过去某段时间或某一时刻正在发生或进行的行为或动作。
结构：was/were+v.-ing
标志词：then, at this time yesterday, at that time, at that moment yesterday, at 7 o’clock last night,以when引导的谓语动词是一般过去时的时间状语。
例句：He was working then.
—Was he working then? —No, he wasn’t.
He wasn’t working then.
现在完成时：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。
结构： have/has + done （动词的过去分词）
标志词：already, yet, just, recently, lately, since+时间点, for+时间段，ever, never等。
例句：I have worked for two years.
—Have you worked for two years?
—No, I haven’t.
I haven’t worked for two years.
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