他连一个字都没写。
tā lián yī gè zì dōu méi xiě 。
He didn't write even a single character.
这个问题连老师都不知道。
zhège wèntí lián lǎoshī dōu bùzhīdào 。
Even the teacher doesn't know the answer to this question.
我忙得连饭都没时间吃。
wǒ máng de lián fàn dōu méi shíjiān chī 。
I'm so busy I don't even have time to eat.