1) (must - have to - should) + a) infinitive b) present simple c) present continuous 2) must is used for: a) personal opinions about what we have to do b) personal goals about what we have to do c) personal challenges we have to do 3) have to is used for: a) obligations that are given by your mom (lava los platos pendejo) b) advise given by expert/someone in authority saying what we have to do c) what other people suggest for doing something 4) example of have to: a) I have to remember to watch the plants b) you have to look at your dog hair regularly c) you have to go out for a coffee 5) example of should a) you shouldn´t forget it or I´ll kill you b) you should go out for a coffee c) you should watch the plants right now!

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