一般现在时第三人称单数（简称：现三单）

肯定句：Pan Xun likes English.

否定句：Pan Xun doesn’t like English.

疑问句：Does Pan Xun like English?

肯定回答：Yes, he does.

否定回答：No, he doesn’t.

练习：

(1) She reads books in the morning.

改否定句：.

改疑问句：?

肯定回答：.

否定回答：.

(2) My dad swims in summer.

改否定句：.

改疑问句：?

肯定回答：.

否定回答：.

(3) Bob goes to school on foot every day.

改否定句：.

改疑问句：?

肯定回答：.

否定回答：.