1 It is the most interesting film i have seen -i have ........................................................ -i have ...................................................... -never............................................................

It is the most interesting film i have seen

`->` I have never seen such an interesting film before .

`->`  I have never seen a more interesting film than it before.

`->`  Never have I (ever ) seen a more interesting film than it before.

Cấu trúc : 

`-` S + have/ has + never + V-pp + before.  

`-` Never + have/ has/ had + S + (ever) + V-pp + before

`-` This /It is the first time + S + have/has + Vpp + O 

`-` S + have/ has + never + V-pp +such +(an ) + N +  before.