(2/2) to have seen意思相等呢
问题描述：
(2/2) to have seen意思相等呢
答
remember to do 记得去做 还没做remember doing 记得做了某事 已经做了
remember having done和rememberto have seen没有本质区别是因为都只能表记得已做过,都是现在完成时,所以被办法表示还没做,否则不叫已经了