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AUXILIARY VERBS - Coggle Diagram
AUXILIARY VERBS
SHOULD
The negative forms
The negative form of "should" is "should not", although we usually use the contraction "shouldn't" (unless we want to give special emphasis to the phrase)
The function of each one
The second modal verb is should. It is very important to master it, since it is one of the words that you will hear and use the most in English.
Should is used to recommend doing something and to state if we think something is as it should be or not.
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HAVE
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The function of each one
We use the verb to have to express everything we drink or consume: We use have to say that we have breakfast: to have breakfast; We had lunch: to have lunch and we had dinner: to have dinner. We use have a / an to say that we eat and drink things (without using the verbs eat and drink).
The negative forms
Verb to have in negative. Although it seems logical that to express I do not have ... let's say I have ... let's see that it is not like that. We will use no.
To say that we don't have something (I don't have or He doesn't have) in English we put don’t or doesn’t in front of the verb have
MUST
The function of each one
Modal verbs: 'Must' "Must" is a modal auxiliary. It is used mainly to indicate an obligation or prohibition ("must do something" or "must not do something"). ... - It is followed by an infinitive verb without "to", except be able to, need to, have to and ought to.
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The negative forms
In its negative form, mustn’t indicates prohibition. To talk about something you don't have to do, but you could do, we use not + have to: You don't have to eat that if you don't want to, but You mustn ' t smoke in here! (You mustn't smoke here! Don't smoke here!)