Only when he is seriously ill,does he ever stay in bed.
不定代词every、no、all、both、neither、nor的用法
1)不定代词有all,both,every,each,either,neither,more,little,few,much,many,another,other,some,any,one,no以及some,something,anything,everything,somebody,someone,anybody,anyone,nothing,nobody,no one,none,everybody,everyone.等。
2)不定代词的功能与用法
a.除every和no外不定代词既可用作名词,也可用作形容词。every和no在句中只能作定语。
I have no idea about it.
b.all都,指三者以上。all的主谓一致:all的单复数由它所修饰或指代的名词的单复数决定。
All goes well.一切进展得很好。
all通常不与可数名词单数连用,如:不说all the book,而说the whole book。但all可与表时间的可数名词单数连用,如all day,all night,all the year;但习惯上不说all hour,all century。all还可以与一些特殊的单数名词连用,如all China,all the city,all my life,all the way
3)both都,指两者。
a.both与复数动词连用,但both…and…可与单数名词连用。
b.both,all都可作同位语,其位置在行为动词前,be动词之后。如果助动词或情态动词后面的实义动词省去,则位于助动词或情态动词之前。
Who can speak Japanese?We both(all)can.
4)neither两者都不
a.neither作主语时,谓语动词用单数。
b.作定语与单数名词连用,但neither…nor用作并列连词,可与复数名词连用。其谓语采用就近原则。
c.可用于下列句型,避免重复。
She can‘t sing,neither(can)he.
neither与nor
d.如前句是否定式从句,则主句用neither,而不用nor。
If you don‘t do it,neither should I.如果你不干,我也不干。
e.如后连续有几个否定句式,则用nor,不用neither。
He can‘t sing,nor dance,nor skate.
比较may和might
1)表示允许或请求;表示没有把握的推测;may放在句首,表示祝愿。
May God bless you!
He might be at home.
注意:might表示推测时,不表示时态。只是可能性比may小。
2)成语:may/might as well,后面接不带to的不定式,意为"不妨"。
If that is the case,we may as well try.
典型例题
Peter come with us tonight,but he isn‘t very sure yet.
A.must B.may C.can D.will
答案B.表可能性只能用may.此句意可从后半句推出。
though,although的用法
注意:当有though,although时,后面的从句不能有but,但是though和yet可连用
Although it‘s raining,they are still working in the field.
虽然在下雨,但他们仍在地里干活。
He is very old,but he still works very hard.
虽然他很老,但仍然努力地工作。