主语为第三人称单数的动词变化主要体现在词尾的变化上,其规律 大体有三点:
1. 一般情况下,直接在动词词尾+s ,例如:get→gets; take→takes
2. 以s, sh, ch, x, o 结尾的动词,在词尾+ es,例如:teach→ teaches; fix→fixes; go→goes
3. 以
辅音字母+ y 结尾的动词,变y 为,再+ es,如:study→ studies; try→tries
除上述规律外,还应注意下面三点:
1. 动词have ,遇到主语是第三人称单数时,要用has动词be 的第三人称单数形式是is。
2. 含有动词第三人称单数形式的句子变否定句时,要用doesn't + 动词原形,如:
He goes to school at six in the morning. (变否定句)→ He doesn't go to school at six in the morning.
3. 对含有动词第三人称单数形式的句子提问时,要用
助动词does,如:
She goes home at five every day. (对划线部分提问)→ When / What time does she go home every day?