初中英语近义替换词——must, have to

must, have to

　　must表示说话人的主观看法;而have to则表示客观需要。mustn't意为“不可以;不允许”;don't have to意为“不必”。如：

　　(1)My father had to work when he was ten years old。

　　(2)The play is not interesting. I really must go now。