MODAL  MUST	Pp+ must + Sf verb	pp+  must not +   sf verb		Must + pp + sf verb		MODAL SHOULD	Pp +should + sf verb	Pp +should +  not + sf verb	should +  pp +  sf verb
PP	POSITIVE        +	NEGATIVE        -		INTERROGATIVE  ?		PP	POSITIVE     +	NEGATIVE      -	INTERROGATIVE  ?
EXAMPLE	I must take exam	I mustn’t take exam		Must I take exam?		EXAMPLE	I should study harder	You shouldn´t copy	Should I go?
I	I must go to the school	I mustn’t go to the school		Must I go to the school?		I	I should call my friend	I shouldn´t call may friend	Should I call my mother?
YOU	You must go to the school	You mustn’t go to the school		Must you go to the school?		YOU	You should call your friend	You shouldn´t call your friend	Should you call your friend?
HE	He must go to the school	He mustn’t go to the school		Must he go to the school?		HE	He should call his friend	He shouldn´t call his friend	Should he call his friend?
SHE	She must go to the school	She mustn’t go to the school		Must she go to the school?		SHE	She should call her friend	She shouldn´t call her friend	Should she call her friend?
IT	It must go to the school	It mustn´t go to the school		Must it go to the school?		IT	It should call its friend	It shouldn´t call its friend	Should it call its friend
WE	We must go to the school	We mustn´t go to the school		Must we go to the school?		WE	We should call our friend	We shouldn’t call our friend	Should we call our friend?
YOU	You must go to school	You mustn´t go to the school		Must you go to the scool?		YOU	You should call your friend	We shouldn’t call your friend	Should you call your friend?
THEY	They must go to the school	They mustn´t go to the school		Must they go to the school?		THEY	They should call your friend	They shouldn´t call your friend	Should they call your friend?
I	I must wear uniform	I mustn´t wear uniform		Must I wear uniform?		I	I should buy this dress	I shouldn´t buy this dress	Should I buy this dress?
YOU	You must wear uniform	You mustn´t wear uniform		Must you wear uniform?		YOU	You should buy this dress	You shouldn´t buy this dress	Should you this dress?
HE	He must wear uniform	He mustn´t wear uniform		Must he wear uniform?		HE	He should buy this shirt	He shouldn´t buy this shirt	Should he buy this shirt?
SHE	She must wear uniform	She mustn´t wear uniform		Must she wear uniform?		SHE	She should buy this dress	She shouldn´t buy this dress	Should she buy this dress?
IT	It must wear uniform	It mustn´t wear uniform		Must it wear uniform?		IT	It should eat this food	It shouldn´t eat this food	Should it eat this food?
WE	We must wear uniform	We mustn´t wear uniform		Must we wear uniform?		WE	We should buy this dress	We shouldn´t buy this dress	Should we buy this dress?
YOU	You must wear uniform	We mustn´t wear uniform		Must we wear iniform?		YOU	You should buy this dress	You shouldn´t buy this dress	Should you buy this dress?
THEY	They must wear uniform	They mustn´t wear uniform		Most they waer uniform?		THEY	They should buy this dress	They shouldn´t buy this dress	Should they buy this dress?
I	I must go to the job		I mustn´t go to the job		Must I go to the job?	I	I should go the party	I shouldn´t go the party	Should I go the party?
YOU	You must go to the job		You mustn´t go to the job		Must you go to the job?	YOU	You should go the party	You shouldn´t go the party	Should you go the party?
HE	He must go to the job		He mustn´t go to the job		Must he go to the job?	HE	He should go the party	He shouldn´t go the party	Should he go the party?
SHE	She must go to the job		She mustn´t go to the job		Must she go to the job?	SHE	She should go the party	She shouldn´t go the party	Should she go the party?
IT	It must go to the job		It mustn´t go to the job		Mus it go to the job?	IT	It should walk in the park	It shouldn´t walk in the park	Should it walk in the park?
WE	We must go to the job		We mustn´t go to the job		Must we go to the jo?	WE	We should go the party	We shouldn´t go the party	Should we go the party?
YOU	You must go to the job		You mustn´t go to the job		Must you go to the job?	YOU	You should go the party	You shouldn´t go the party	Should you go the party?
THEY	They must go to the job		They mustn´t go to the job		Must they go to the job?	THEY	They should go the party	They shouldn´t go the party	Should they go the party?
I	I must pay attention		I mustn´t pay attention		Must I pay attention?	I	I should call that boy	I shouldn´t call that boy	Should I call that boy?
YOU	You must pay attention		You mustn´t pay attention		Must you pay attention?	YOU	You should call that boy	You shouldn´t call that boy	Should you call that boy?
HE	He must pay attention		He mustn´t pay attention		Must he pay attention?	HE	He should call that girl	He shouldn´t call that girl	Should he call that girl?
SHE	She must pay attention		She mustn´t pay attention		Must she pay attention?	SHE	She should call that boy	She shouldn´t call that boy	Should she call that boy?
IT	It must pay attention		It mustn´t pay attention		Must it pay attention?	IT	It should sleep in the chair	It shouldn´t sleep in the chair	Should it sleep in the chair?
WE	We must pay attention		We mustn´t pay attention		Must we pay attention?	WE	We should call that boy	We shouldn´t call that boy	Should we call that boy?
YOU	You must pay attention		You mustn´t pay attention		Must you pay attention?	YOU	You should call that boy	You shouldn´t call that boy	Should you call that boy?
THEY	They must pay attention		They mustn´t pay attention		Must they pay attention?	THEY	They should call that boy	They shouldn´t call that boy	Should they call that boy?