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当一件事情正在发生时,另一件事情突然发生,中间用but连接.
一件事情正在发生时用现在进行时，另一件事情突然发生时用一般现在时.
构成:主语+be+ 动词ing, but 主语 + 动词 原形/动词单三形式。
The tips of grammar
Look and say
She/he is doing sth , but…
practice
1、They are ________football , but it starts to rain.
2、She is cooking , but the phone ____.
3、She is ________ the erhu , but the dog starts to bark very loudly.
4、The boy ______, but the baby _____to cry.
playing
rings
playing
starts
is sleeping
practice
Listen and read. Then say the poem
I am flying in the sky. My mum is waving to say goodbye.
挥手
I am high up above a plane. Mum is calling out my name.
It is getting very dark and I am going to the park.
I am having an ice cream. Then I wake up from my dream.
醒来
Task completion
1、talk about interruptions in our life.
I am doing…, but...