你知道吗?Have的第三人称单数变式是has。
虽然它的使用很普遍,但是原理却不简单。下面是它的用法:
- 当主语是单数第三人称时,动词要加s或es,如He has a car.
- 当动词本身已经以s, x, ch, sh 结尾时,只需加es,如She passes by my house everyday.
- 当动词本身以y结尾,而y又在元音前,则只需要加s,如He enjoys watching movies.
- 当动词本身以y结尾,且y前面是辅音字母,则变y为i, 再加es,如She tries to exercise every day.