They're both okay grammatically, but it would sound more natural to natural to use "it" to hold the place of the subject when you're talking about weather: It's raining too hard for us to play tennis today. When it's raining this hard, no one wants to play tennis. Or you could use the people who don't want to play as the subject: We don't want to play tennis in the rain. No one wants to play tennis when it's raining this hard.

Hi Zoe. Yes. Both sentences are acceptable, and have the exact same meaning. For the purposes of normal every-day conversation, neither sentence is better than the other :) Hope this helps -Jonathan

Yes both are the same in everyday speaking. English is much more flexible than the grammar books suggest. Just remember to be capable of understanding when and how to use the word 'it'. Especially in an exam situation. It and that and this always refer to whatever it is we are speaking about. So perhaps for an exam that structure will help you best. You can always learn other structures after passing any exams.

Yes. They both seem correct. In my day-to-day speech, I would probably say the first sentence, whereas my mom would probably say the second one.

Both are correct. I would make each more personal. The thing of interest is that WE cannot play tennis. Also, if it is now raining, say "this rain" rather than "the rain".: The rain makes playing tennis impossible for us. The rain makes it impossible for us to play tennis. The rain makes our playing tennis impossible. The rain makes tennis impossible for us. (Playing) tennis is impossible for us with the rain.