wǒ yào zhíjī
I need to check in for a flight
洗手间在哪里?
Where is the toilet?
洗手间 (xǐshǒujiān) means 'washroom' or 'toilet', 在 (zài) means 'is located at', and 哪里 (nǎlǐ) means 'where'. The question particle 吗 is not needed because 哪里 makes it a question.
厕所在哪里?
cèsuǒ zài nǎlǐ?
Where is the toilet? — More casual, using 厕所 (cèsuǒ) instead of 洗手间.
请问洗手间在哪里?
qǐngwèn xǐshǒujiān zài nǎlǐ?
Excuse me, where is the toilet? — More polite, adding 请问 (qǐngwèn) at the beginning.
请问洗手间在哪里?
qǐngwèn xǐshǒujiān zài nǎlǐ?
Excuse me, where is the toilet?
就在那边,右转。
jiù zài nà biān, yòu zhuǎn.
It's right over there, turn right.
Appropriate
Avoid when
You can say '洗手间在哪里?' (xǐshǒujiān zài nǎlǐ?), which literally means 'Where is the washroom?'
It is pronounced 'xǐshǒujiān zài nǎlǐ?' with the tones: xǐ (3rd tone), shǒu (3rd tone), jiān (1st tone), zài (4th tone), nǎ (3rd tone), lǐ (3rd tone).
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