快

很快

hěn kuài

Very fast

快点儿

kuài diǎnr

Hurry up

他说得很快

tā shuō de hěn kuài

He speaks very quickly

时间过得真快

shíjiān guò de zhēn kuài

Time flies so quickly

这个月快结束了

zhège yuè kuài jiéshù le

This month is almost over

走得很快

zǒu de hěn kuài

He walks very fast