专用小马
幼苗
共回答了22个问题采纳率:86.4% 举报
有没有变化格式?
Sam can not fall asleep if he does not drink milk.
= Sam can not fall asleep unless he drinks milk.
= Sam isn't able to fall asleep unless he drinks milk.
= Sam isn't able to fall asleep if he doesn't drink milk.
can not 也可以换写成 can't或cannot;
isn't 可以全写成 is not.
1年前
9