Dialogues　

1. 请问地铁站在哪里？Qǐngwèn dìtiězhàn zài nǎli?
Excuse me, where is the subway station?
qing3 wen4, again, means please may I ask.
di4tie3, subway.
zhan4, station.
zai4, a preposition, and it means at.
na3li, where.
　

2. 离这里远吗？Lí zhèli yuǎn ma?
Is it far from here?
Li2, away from.
zhe4li, here.
yuan3, far.
ma is a particle, indicating the question.
　

3. 我应该坐什么车去？Wǒ yīnggāi zuò shénme chē qù?
Which bus should I take to get there?
wo3, I.
ying1gai1, should.
zuo4 originally means to sit down. Here it refers to take a bus.
shen2me, what.
che1, here is short for gong1jiao1 che1, which means bus.
qu4, to go.
　

4. 您得去马路对面坐车。Nín děi qù mǎlù duìmiàn zuò chē.
You should catch the bus on the opposite side of the road.
nin2 the polite form of ni3, meaning you. 
dei3, should.
qu4, go.
ma3lu4, road.
dui4mian4, opposite.
zuo4 che1, to take a bus.