1. 做什么事
主语是三单：What does+主语+do?
主语不是三单：What do+主语+do?
E.g. What does he do on Sunday?
He goes to the zoo on Sunday.
What do you do in the evening?
I usually read books in the evening.
2. how often “多久一次”，对频率提问，如once a week, twice a week , three times a week,every day, sometimes, often.
E.g. How often do you go to the zoo?
I go to the zoo once a week.
3. 在几点用at，放在句尾。（也可以放在句首，但是要用逗号隔开）如果有两个时间，先说小时间，再说大时间（与中文相反）
E.g. She gets up at 6:00. （没有逗号）
At 6:00, she gets up. （时间放句首，有逗号）
She gets up at 6:00 in the morning. （先说小时间6:00，再说大时间morning）
4. after 介词/连词 “在...之后”
after school “放学后”，after class “下课后”
5. She goes to bed at about a quarter to ten. “她大约九点四十五睡觉。”
about prep. “关于” adv. “大约”，位于介词后时间前
