Can you say “Id rather sightseeing than lying on the beach?”, i.e. can you ever use the -ing form after “Id rather”?
Rather than causes a lot of confusion. You’d say “I’d rather go sightseeing than lie on the beach.” “Rather than” can be followed by either a gerund or the infinitive, according to the main construction of the sentence. For example:- I’d rather read a book than watch television. (This form has to take the bare infinitive and it’s talking about my general preferences) I’d rather be reading a book than watching television. (Still takes the bare infinitive of the verb “to be” but is talking about now) However you can say:- Rather than watching television she read a book.