Why don't we go to the cinema tonight?
→ Shall we go to the cinema tonight?
→ Let's go to the cinema tonight.
→ What about going to the cinema tonight?
It is tiring to talk to him.
→ We are tired of talking to him. (or) → We find it tiring to talk to him.
Sitting at home all day is boring to me.
→ I am bored with sitting at home all day.
Cooking dinner for the family is boring.
→ She is bored with cooking dinner for the family. (Assuming "she" is the subject. If the subject is different, change the pronoun accordingly.)
His bad result made us disappointed.
→ We were disappointed by his bad result.
This film was interesting.
→ We were interested in this film.
He isn't interested in this film.
→ This film doesn't interest him.
He has a great interest in maths.
→ He is very interested in maths.
I find watching Monster Inc. very interesting.
→ I am very interested in watching Monster Inc.
I've never seen such a boring movie. (most)
→ This is the most boring movie I've ever seen.
This is the most moving film I've ever seen. (more)
→ I have never seen a more moving film than this one.
I thought the film would be interesting, but it wasn't.
→ The film was not as interesting as I had thought.
How long is it since you went to the cinema? (last)
→ When did you last go to the cinema?
The last time I saw an American romance was three months ago.
→ I haven't seen an American romance for three months.