1、碰巧做
happen to do 偶然,碰巧; 碰巧做; 强调事情的偶然发生..
2、恰巧
... during the rush hour 上下班高峰期 happen to do 恰巧 winning 吸引人的（主要指物品） ...
3、碰巧做某事
... bother 花费时间精力做某事，常用于否定和疑问句。 happen to do 碰巧做某事 disturb 打扰 ...
4、碰巧
... statue, remains n. 遗物，遗迹，废墟, date from 始于,起源于,可以追溯到… happen to do 碰巧 Classical times 古希腊，古典时代， preserve 保护 ...
happen n to do sth碰巧做某事
sb happen to do碰巧做某事
Happen to do something是指偶然做某事;偶尔碰巧做某事
happen to do detail碰巧做
She happen to do sb她是碰巧某人
Someone happen to do something某人碰巧正在做某事
sb happen to do sth某人碰巧做某事
sth happen to do sth某人出了某事
somebody happen to do something某人碰巧做某事