Memory Modals of obligation/necessity (D)Versión en línea Let's work on some modals! (should, can, need, have to, must) por Tami Sotelo Suggestion. Not a prohibition, but it is better not to do it. Prohibition, strong. Optional, not necessary but not wrong to do or have. Optional, absolutely no obligation or phohibition of any type. Suggestion. Not an obligation, but it is best to do as adviced. Obligation, strong. Obligation, not as strong. Necessity. Strong.
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