why don't we watch a film now? -->what about.. "would you like to have some coffe?",said Tom to Mary. -->Tom invited Mary...

`1.` What about watching a film now?

`=>` What about + V-ing

`=>` Cấu trúc What about + V-ing + O?

`2.` Tom invited Mary to have some coffee

`=>` Cấu trúc: S + invited + somebody + to V +O