英语有提不会

正在进行时的构成和表示方法 还有常用词

现在进行时: be (am, is, are) + doing

现在进行时表示说话时正在发生或者进行的动作，由助动词to be 的现在时 + 现在分词构成：
时间状语：now, look, listen，It’s …o’clck,


2.肯定式
否定式
疑问式：
a.肯定式：
I am working.
You are working.
He (she) is working.
We (you,they) are working.

b否定式：
否定句在be动词后面加not.

I am not working.
You are not working.
He (she) is not working.
We (you,they) are not working.

C 疑问句：
疑问句把be动词提前。
Am I working?Are you working?
Is he (she) working?
Are we (you,they) working?
3.V+ing 的三种形式：
1.v.+ing
sleep---sleeping

walk----walking do----doing


stand---standing
2.去e+ing
dance----dancing
ride-----riding
have------having

close----closing
3.双写+ing
run----running
swim-----swimming
sit
---sitting

jog----jogging