一般现在时：
第一人称：I have an apple.
I work as engineer.
第三人称：He has an apple.
现在进行时:
I am playing basketball now.
Listen,they are singing a song.
Look,they are drawing.
一般过去时:
I had breakfast.
i was a doctor
i played basketball yesterday.
一般将来时;
I will go to seoul.
i am going to swim.
he is going to play computer game.