外研版七年級英語上冊《Language in use》People and places PPT教學課件，共20頁。
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.
現(xiàn)在進行時(1)
現(xiàn)在進行時表示：1.說話時正在進行的動作，2.現(xiàn)在正在進行的動作。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、 現(xiàn)在進行時的構成: 助動詞be + V-ing。
請大家注意觀察，其中的助動詞be 隨著人稱、數(shù)的變化而變化(am, is, are三種形式) 。
I’m visiting my friend.
He is eating an ice cream.
We’re preparing for Spring Festival.
They are lying in the sun.
二、句型轉換
在變?yōu)榉穸ň鋾r, be后加not； 在變?yōu)橐话阋蓡柧鋾r把be提前到句首, 人稱和 be 作相應變化。
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、動詞-ing的構詞規(guī)律:
①一般情況下，動詞后面直接加-ing
doing buying playing
② 以字母e結尾的動詞，去掉e，然后加-ing
having taking giving writing
③重讀閉音節(jié)、末尾只有一個輔音字母的, 雙寫動詞最后一個字母, 然后加ing。
running swimming sitting
shopping getting beginning putting
④特殊形式的變化
lie — lying die —dying
四、使用場合
1.當句子中有now,或當句子以look、listen開頭時,通常采用現(xiàn)在進行時。
My brother is sleeping now.
Look! The students are having an English class now.
Listen! She is singing over there.
2.當表示當前一段時間內正在進行的動作、且句中有this week, these days等時間狀語時,通常用現(xiàn)在進行時。
We are working on a farm these days.
We are studying Unit 1 this week.
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關鍵詞：Language in use PPT課件免費下載，People and places PPT下載，.PPTX格式；
