2018中考英语语法:have to和must
出国留学网中考网为大家提供2018中考英语语法:have to和must,更多中考英语复习资料请关注我们网站的更新!2018中考英语语法:have to和must1) 两词都是'必须'的意思,have to 表示客观的需要, must 表示说话人主观上的看法,既主观上的必要。My brother was very ill, so I had to call the doctor in the middle of the night. 我弟弟病得很厉害,我只得半夜里把医生请来。(客观上需要做这件事)He said that they must work hard. 他说他们必须努力工作。(主观上要做这件事)2) have to有人称、数、时态的变化,而must只有一种形式。但must 可用于间接引语中表示过去的必要或义务。He had to look after his sister yesterday。3) 在否定结构中: don't have to表示"不必" mustn't表示"禁止",You don't have to tell him about it. 你不一定要把此事告诉他。You mustn't tell him about it. 你一定不要把这件事告诉他。中考英语频... [ 查看全文 ]2018中考英语语法:have to和must的相关文章