1. Do I need a reservation to go by ship?
我坐船去需要预订吗？
还能这样说：
Do I have to make a reservation if I take ship?
Do you think I should make a reservation to go by ship?
谚语：
A little leak will sink a great ship.
千里之堤，溃于蚊穴。
2. What time does the ship leave?
船什么时间起航？
还能这样说：
When does the ship leave?
Could you please tell me the departure time of the ship?
应用解析：
by/with your leave 恕我冒昧，对不起；
ask for leave 请假；
take one's leave of 辞别，离开；
leave for 前往
3. The ship was due to sail the following morning.
这艘船定于第二天起航。
还能这样说：
The ship got to start the second morning.
The ship set sail the following day.
应用解析：
set sail for 开船，动身；
sail about 逛来逛去；
sail for 乘船往……
4. How much does a round trip ticket to Wuhan cost?
一张去武汉的往返票要多少钱？
还能这样说：
How much is the fare for a round trip ticket to Wuhan?
What does it cost to buy a round trip ticket to Wuhan?
应用解析：
a round of applause 掌声雷动；
a round of visits 一系列的访问；巡回出诊；
all round 周围；四面八方；每一个人；
argue round and round 只在问题表面兜圈子