once后面时态.１、Once he said that,I know he was lying.2.Once you have make a promise,you must carry it out.两句都对?once后面究竟完成时态还是一般时?

once后面时态.１、Once he said that,I know he was lying.2.Once you have make a promise,you must carry it out.两句都对?once后面究竟完成时态还是一般时? once! once once Once once Once once once once at once 什么时态标志 used to 后面直接接动词还是动词的过去式He used to visit his mother once a week帮我看下这句时态用对了没有 Once he starts a job he won't stop until it's finished 语法讲解时态讲解 为什么用starts 不用start 请问,he Came at once 的came,he在前面要加s,还是Ing,一般he后加什么He后面是加什么 at once用于什么时态中 once是什么时态的标志词 once a week用什么时态 once在句尾用于什么时态