《Language in use》People and places PPT教学课件

外研版七年级英语上册《Language in use》People and places PPT教学课件，共20页。

Learning Objectives

By the end of the class, we will be able to:

1. learn to use present continuous tense.

2. know about time zones.

现在进行时(1)

现在进行时表示：1.说话时正在进行的动作，2.现在正在进行的动作。例如：

He is watching TV now.

He is drinking a glass of water.

We are working on a farm these days.

I am writing a book this year.

一、 现在进行时的构成: 助动词be + V-ing。

请大家注意观察，其中的助动词be 随着人称、数的变化而变化(am, is, are三种形式) 。

I ’m visiting my friend.

He is eating an ice cream.

We ’re preparing for Spring Festival.

They are lying in the sun.

二、句型转换

在变为否定句时, be后加not； 在变为一般疑问句时把be提前到句首, 人称和 be 作相应变化。

My mum is walking home.

→My mum is not walking home.

→Is your mum walking home?

Tony is taking photos.

→Tony is not taking photos.

→Is Tony taking photos?

三、动词-ing的构词规律:

①一般情况下，动词后面直接加-ing

doing buying playing

② 以字母e结尾的动词，去掉e，然后加-ing

having taking giving writing

③重读闭音节、末尾只有一个辅音字母的, 双写动词最后一个字母, 然后加ing。

running swimming sitting

shopping getting beginning putting

④特殊形式的变化

lie — lying die —dying

四、使用场合

1.当句子中有now,或当句子以look、listen开头时,通常采用现在进行时。

My brother is sleeping now.

Look! The students are having an English class now.

Listen! She is singing over there.

2.当表示当前一段时间内正在进行的动作、且句中有this week, these days等时间状语时,通常用现在进行时。

We are working on a farm these days.

We are studying Unit 1 this week.