it's my first time__(watch)the film.

it's my first time__(watch)the film.
it's my first time__(watch)the film.

it's my first time__(watch)the film.
答案：to watch
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to watch

It's the first time to do sth....
第一次做。。。
是固定的搭配哦。

it's my first time_to watch_(watch)the film.
it's the/my first time to do sth
表示第一次干某事

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