[ESL] 助動詞

Can
Ability: Julie can swim.
permission: can I come with you? / may I come with you?
Offer: can I help you?

Could
Possibility: that story could be true - who knows!
Past ability: Charlie could swim when he was four years old.
Permission: could I use your phone?
Requests: could you tell me the way to the station please?

May
Possibility: the president may come to our offices if the meeting finishes before 5 pm.
Permission: may I borrow your dictionary?

Might
Slight possibility: we might win a prize but I doubt it.
Past form of 'may' in reported speech: the president said he might come.

Should
Advise: you should take an umbrella in case it rains.
Logical deduction: I've revised so I should be ready for the test.

Ought to
Advise: you ought to write to your grandmother.
Logical deduction. 30 ? ought to be enough for the taxi.

Shall
Offers/suggestions with "I" and "we": shall I order a taxi? / shall we begin the meeting now?

Will
Future tense auxiliary: tomorrow I will be in New York.
Invitations/offers: will you join us for coffee? Won't you come in?

tag : LANG ESL

2014-10-14 00:47 : 語学 : コメント : 0 : トラックバック : 0 :
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