INVERSIONSHOULD + S + V , S + WILL /SHALL/CAN/MAY + VIF CAN BE OMIT...

6. InversionShould + S + V , S + will /shall/can/may + VIf can be omitted , V + (0)Should come before-Should Mary see you , give her my best regards.the subject Note : If – clause either precede or follow the main clause . If they precede the mainclause , we separate them with a comma.EX : If you eat a lot sweets, you’ll gain weight.But : You’ll gain weight if you eat a lot sweets.*Conditional Sentence type 2 : Unreal situations in the presentForm , inversion and usage [4] ,[5]FormUsageIf clause , main clause