Hello! Could someone please explain to me why 1) "Let's go swimming" sounds right, while 2) "Let's go playing tennis" does not (at least in my opinion)? Unfortunately I haven't been able to find the answer in the previous threads. In sentence 2) (second question, but same topic), would you normally say a) "Let's go play tennis" b) "Let's go and play tennis" c) "Let's go to play tennis" I think a) would be the commonest, but perhaps all three are possible. Thank you!