have to与must在英语中用法有什么不同
问题描述:
have to与must在英语中用法有什么不同
答
must have to 表示客观的需要 eg.Tom,come out to play with us.Sorry,my mom said i have to finish my homework first.eg.Do you have to leave now?yes,i must eg Do i have to eat it up,mom?no,you needn't 参...