请坐，欢迎光临！
qǐng zuò ， huānyíng guānglín ！
Please have a seat, welcome!
老师说：请坐，今天我们要上课。
lǎoshī shuō ： qǐng zuò ， jīntiān wǒmen yào shàngkè 。
The teacher said: Please have a seat, today we are going to have class.
在餐厅里，服务员告诉我：请坐在这个位置。
zài cāntīng lǐ ， fúwù yuán gàosù wǒ ： qǐng zuòzài zhègè wèizhì 。
In the restaurant, the waiter told me: Please have a seat at this spot.