指示代词有this,that,these,those,可以作主语、定语、宾语、表语等。如:
Are these your chairs?(these作主语)这些是你们的椅子吗?
I don't like this TV set.I like that one.(this和that作定语)我不喜欢这台电视机。我喜欢那一台。
注意:
1.this /these一般指空间或时间上较近的人或物;that /those一般指时间或空间上较远的人或物。如:
This is a pen and that is a pencil.这是钢笔,那是铅笔。
We are busy these days.这些天我们很忙。
2.this /these可指后面要谈到的事。而that /those指前面提到过的事。如:
He had a bad cold.That is why he didn't come to the meeting.他患了重感冒。这就是他没来参加会议的原因。
3.打电话时,常用that询问对方是“谁”,用this介绍自己。如:
—Is that Mr Black speaking?你是布莱克先生吗?
—Yes,who's that?是的,你是谁?
—This is Mike.我是迈克。