1.I didn't know 并不能算是真正的主句成分,这句话应该是I didn't know THAT he came back until.
所以说嘞,因为come back 是个瞬间的动作,因此后面可以用until
2.尽管他们是兄弟俩,但是他们彼此几乎完全不同
1.I didn't know 并不能算是真正的主句成分,这句话应该是I didn't know THAT he came back until.
所以说嘞,因为come back 是个瞬间的动作,因此后面可以用until
2.尽管他们是兄弟俩,但是他们彼此几乎完全不同