BBC英国广播电台广播英语课程(根据广播节目整理)shall,will,should,would的用法与用法区别will,构成将来时,不管什么场合,都用will
例句:Iwillgohometomorrow
I’llgohometomorrow
Hewillbeheresoon
Theywillnotarrivebeforenextweek
(Theywon’tarrivebeforenextweek
)Hewon’tcometoday
shall,一种用法是在主语是第一人称的句子里代will
例句:Ishallgohometomorrow
第二种用法,用在第二人称与第三人称的句子中,加重语气,有“非这样做不可”的意思
例句:Heshallcomeatonce
shall是一定,非得的意思
但现在,特别是年轻人,一般不用shall,而用makesure
Makesureshecomesatonce
should,would,用来表达条件的助动词
IshouldgoatonceifIwereyou
I’dgoatonceifIwereyou
Iknewyou’dunderstand
should,应该,用于各种人称,而且只能用should
Weshouldkeepupourpromises
Youshouldseeadoctoratonce
Would,行动,做法(过去的习惯)
Inthosedayshewouldstayinbedtillnoon
Would,提要求
Wouldyoudrivemehometonight