wǎn shang
晚上要去看望一个朋友
wǎnshang yào qù kànwàng yí ge péngyou
going to visit a friend in the evening
一连几个晚上都没有睡好觉。
yī lián jǐ gè wǎn shang dōu méi yǒu shuì hǎo jiào
Haven't slept well for several nights in a row.