肯定句：I am watching TV.（我正在看电视）
The little monkey is eating banana.(那个小猴子正在吃香蕉.）
He is flying a kite.(他正在放风筝.)
She is doing her homework.(她正在做她的作业.）
He is sswimming at the pool.(他在水池里游泳)
一般疑问句：Is she doing?(她在干什么?）
Are you dancing?（你在跳舞吗?）
Is he reading books at the library?（他在图书馆看书吗?）
Are they paiying basketball?(他们在打篮球吗?）
特殊疑问句：What are you doing?（你在干什么?)
who is he talking to?(他在和谁谈话?）
What is she reading?（她在读什么?）
What is the man doing?（那个男人正在做什么?）
Where is he swimming?（他在哪里游泳?)