"We have a mother."
Translation:У нас есть мама.
Where you want to underline or clarify it, but there's no difference, as 'to be' is somehow crippled and almost nonexistent in russian.
I think in this level we have to memorise some sentences or idioms Like У меня есть = I have У тебя есть = you have У нас есть = we have I hope it's useful in this level :)
У меня есть = By me (there) is, more or less. That's the exact translation and always stands for possession (or kinship, as I don't really possess my mother, but у меня мама).
it is in the explanation of duolingo У is a preposition. The structure in Russian is, essentially, an existence construction ("By us, there's a motor")
Мать, матерь, мама - should be correct, but the first two are more formal.
a russian keyboard would be useful to select letters - I can set a keyboard on my laptop but I have to guess where the keys are...
I'm assuming you know how to touch type already.
If your intention is to be serious about learning Russian, the couple of weeks spent learning to type with a Russian keyboard is a trivial part of it compared to what else is involved.
There are a number of free programs available on the internet to teach you the Russian keyboard. Try a few and see which one works best for you.
I use Russian keyboard on my phone or On-Screen Keyboard on PC/laptop - you might join On-screen with normal keyboard to touch type; you look at the screen and use normal keyboard to teach your fingers where the letters are. Takes a few days to get used to that and make just some little mistakes.
I do not believe that you need есть when you get further along. It is more like physically our mother is right here. But I believe you can say просто... У нас мама.
It's other way around. You can say "мама у нас" or "у нас мама" if she's visiting you, while "у нас есть мама" means "we do have a mother", i.e. "we are not orphans".
ou have wonderful eyes! Omit ”есть” if the existence of the object is obvious or not the point — very typical for describing traits or a number of objects (“Tom has a beautiful smile/large eyes”, “She has a very fat cat”). This also applies to expressing temporary states and illnesses (“She has a migraine”). however i should say that everyone has a mother?? why есть included???