(点击右边三个点，可调整速度，电脑上可下载)

I. EXAMPLES

How often is there a leap year?

多久有一次闰年？

How often is there a flight to Shanghai?

去上海的航班多久有一趟？

How often do you write to your parents?

你多久给父母写一次信？

II. DIALOGUES

A: I’ve been having bad dreams lately.

A：我最近老是做噩梦。

B: Really? How often?

B：真的吗？多久做一次？

A: Just about every night.

A：差不多每天晚上都做。

B: What do you dream about?

B：你梦到什么了？

A: I dream about being in a boat and suddenly a storm comes and I drown because I can’t swim.

A：我梦到自己在船上，突然来了一场暴风雨，我因为不会游泳而溺水了。

B: Maybe you should learn how to swim. Then you won’t have any nightmares.

B：或许你应该学游泳。那样你就不会做噩梦了。