“他的电话号码是多少？是6842001。”的英文翻译为Whats his telephone number?Its 6842001.

重点词汇what的用法：

1、get/give sb what for（受到）严惩；（被）痛打一顿，申斥一顿

例句：Ill give her what for if she does that again.她若再这样做，看我怎么收拾她。

2、and what not/and what have you以及其他同样的东西；诸如此类

例句：Its full of old toys, books and what not.这里全都是旧玩具、书籍，以及诸如此类的东西。

3、what-dyou-call-him/-her/-it/-them或者whats-his/-her/-its/-their-name

（记不得名字时说）你叫他（或她、它、他们）什么来着

例句：Shes just gone out with old what-dyou-call-him.她刚和老——你叫他什么来着——一块出去了。

What的其他重要用法：

1、尤用于动词和形容词后以引导关系从句

例句：You can imagine what it would be like driving a car into a brick wall at 30 miles an hour...你可以想象汽车以每小时30英里的速度撞向一堵砖墙结果会怎样。

2、 (用在强调句型的句首)所…的(是…)

例句：What precisely triggered off yesterdays riot is still unclear...究竟是什么引发了昨天的骚乱还不清楚。

3、 (用于指全部的量)所有的

例句：He drinks what is left in his glass as if it were water...他把杯子里剩下的东西当水一样全喝了下去。

4、(表示已经听到对方的话，并请其继续说)什么事

例句：Dad? — What? — Can I have the car tonight?“爸爸？”——“什么事？”——“我今晚能用车吗？”