您要查找的是不是：
- 预订车票要多久? Now,how long in advance will I have to book?
- 预订车票 book tickets in advance
- 想要 be desirous to
- 你可以预订车票、旅馆和别的一些东西。 You can order the ticket, hotel and other things.
- 一定要 must
- 要是 if
- 预订 (v) place an order; book ahead
- 多久 How long ...
- 要有 need
- 就要 will; be about to
- 要不 otherwise
- 要找 inquire for
- 你要多久才能教会一个婴儿不走近火? How soon can you teach a baby not to go near the fire?
- 到你家要多久？ How long will it take to get to your house?
- 我肯定不要多久，他就会大发雷霆的。 I'm sure his fury will flame forth soon.
- 信从北京到美国要多久? How long does it take for a letter to get to America from Beijing?
- 骨折要多久才会愈合? How long will it take for the broken bone to heal up?
- 还清货款要多久? How long shall it take to have the payment completely make?
- 要多久才能洗好? How long will it take to get them cleaned?
- 从这到公园要多久? How long does it take from here to the park?
