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掌握现在分词的变化规则
3、Can use present continuous tense
to describe what is happening
能够使用现在进行时态描述正在
发生的事情
She is writing to her friend.
write to …
写信给…
They are waiting for the bus.
wait for …
等候…
He is looking for something.
look for …
寻找 ……
He is lying in the grass.
lie 躺；平放；位于 （lie的ing 形式为lying）
Taiwan lies in the southeast of China.
Taiwan
What is he doing now?
He is dancing.
当我们描述一个正在发生的动作时要用
现在进行时
(the present continuous tense)
I am eating.
You/ We/ They are eating.
He/ She/ It is eating.
一、现在进行时肯定句和否定句的构成：
肯定句: 主语+ am/ is /are + v-ing ...
否定句: 主语+ am/ is / are not + v-ing ...
I am not eating.