有些學(xué)生分不清have to和must的區(qū)別,冬令營(yíng)游學(xué)將二者進(jìn)行了比較。
有些學(xué)生分不清have to和must的區(qū)別,冬令營(yíng)游學(xué)將二者進(jìn)行了比較。
1)兩詞都是'必須'的意思,have to 表示客觀的需要,must 表示說(shuō)話人主觀上的看法,既主觀上的必要。
my brother was very ill,so i had to call the doctor in the middle of the night.我弟弟病得很厲害,我只得半夜里把醫(yī)生請(qǐng)來(lái)。(客觀上需要做這件事)
he said that they must work hard. 他說(shuō)他們必須努力工作。(主觀上要做這件事)
2)have to有人稱、數(shù)、時(shí)態(tài)的變化,而must只有一種形式。但must 可用于間接引語(yǔ)中表示過(guò)去的必要或義務(wù)。
he had to look after his sister yesterday.
3)在否定結(jié)構(gòu)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訴他。
you mustn't tell him about it. 你一定不要把這件事告訴他。