- should - ought to
- Should and ought to are sometimes used with similar meanings. When should has a similar meaning to ought to, you pronounce it in full and you do not write it as 'd. (See entry at ↑ should - would.)\Should and ought to have the negative forms should not and ought not to. The `not' is not usually pronounced in full. When you write down what someone says, you write shouldn't or oughtn't to.\
We should be there by dinner time.
\It ought to get better as it goes along.
\Dear Mom, you should have heard by now that I'm O.K.
You also use should or ought to with `have' to say that something was expected to happen, but did not happen.Two bags which should have gone to Rome were at this moment being loaded aboard a flight to Milwaukee.
\The brandy I'd swallowed ought to have knocked me silly.
Note that you must use `have' and a past participle in sentences like these. You do not say, for example, `The brandy I'd swallowed ought to knock me silly'.\◊ moral rightnessCrimes should be punished.
Aid should not be tied to the purchase of goods from the donor country.
I ought to call the police.
\We ought to be doing something about it.
◊ giving adviceYou can say you should or you ought to when you are giving someone advice.I think you should get in touch with your solicitor.
You shouldn't keep eggs in the refrigerator.
\I think you ought to try a different approach.
Useful english dictionary. 2012.