You could go to Shanghai by train.
你可以乘火车去上海。

A You could go to Shanghai by train.

A 你可以乘火车去上海。

B I like travelling by train. It's more interesting.

B 我喜欢乘火车旅游。乘火车更有趣

A Well, if you have time, you should consider it.

A 哦,假如你有空闲的话,应该考虑乘火车。

B How long does it take?

B 乘火车需要多久?

A You can catch the overnight1 train. It takes about 12 hours.

A 你可以乘夜车。需要12个小时。

B I'll think about it. Maybe I will take the train.

B 我会考虑的。或许我会乘火车去。

Notes 注解

1 If you suggest a possibility, you can use could / could, e.g. You could go to Shanghai by train. / You could go to Shanghai by train.; You could catch the 10 o'clock flight / You could catch the 10 o'clock flight.

假如你建议某种可能性,可以用could /可以,比如:You could go to Shanghai by train. /你可以乘火车去上海。; You could catch the 10 o'clock flight. / 你可以赶上10点的航班。

2 Remember, you can also use should / should when you make a suggestion: You should consider it. / You should consider it.

请记住,当你在提出建议时也可以用should /应该:You should consider it. /你应该考虑考虑。

3 When you ask how long a journey or a train trip or a flight takes, you usually reply: It takes . . . / It takes . . . e.g. It takes about one hour. / It takes about one hour; The Beijing- London flight takes about 10 hours. / The Beijing - London flight takes about 10 hours.

当某人问旅程,如乘火车或者飞机需要多久时,一般可以如此回答:It takes . . . / 它需要 . . . 比如: It takes about one hour. / 大约需要1小时; The Beijing-London flight takes about 10 hours. / 北京到伦敦的航班需要10个小时。

Key phrases2 and sentences
要紧的短语和句子

You could go to Shanghai by train.
你可以乘火车去上海。

I like travelling by train.
我喜欢乘火车旅游。

It's more interesting.
乘火车更有趣。

Well, if you have time, you should consider it.
哦,假如你有空闲的话,应该考虑乘火车。

How long does it take?
乘火车需要多久?

You can catch the overnight train.
你可以乘夜车。

It takes about 12 hours.
需要12个小时。

I'll think about it.
我会考虑的。

Maybe I will take the train.
或许我会乘火车去。