1. 他乘火车来。

[ tā chéng huǒ chē lái 。 ]

He came by train.

2. 你怎样去北京，是乘飞机还是坐火车?

[ nǐ zěn yàng qù běi jīng ， shì chéng fēi jī hái shì zuò huǒ chē ? ]

How would you go to Beijing, by air or by train?

3. 我需要换乘11路公共汽车，但是汽车站在哪儿?

[ wǒ xū yào huàn chéng 11 lù gōng gòng qì chē ， dàn shì qì chē zhàn zài nǎ ér ? ]

I have to transfer to No. 11 bus, but where is the bus stop?