when doing sth 还是 when do sth (语法问题)
when doing sth 还是 when do sth (语法问题)
when sb.do sth.还是 when sb.doing sth.
什么时候when sb do sth 可变成when doing sth
when are you doing sth?正确还是when are you do sth?正确?
when的结构,不是时间状语从句,不是现在完成时,是when sb do sth,还是when sb doing sth
be doing sth.when
语法中please to do sth还是please doing sth 还是please do sth?
use sth doing sth还是use sth to do sth
plan+to do sth.还是doing sth.还是 do sth.
expect to do sth还是doing sth?
have somebody do sth 还是doing sth?
after do sth.还是after doing sth.