"We are alone."
Translation:Nous sommes seuls.
No. Duo works that way. Frustrating at first for some but we get used to it. You can always hover on it if it's a written lesson. I now have a Fr/En dictionary to hand or another larousse site on tab now. At worst I just get it wrong and them I'm corrected, go to the forum and usually learn all about the new word there.
Can someone help me to understand the pronunciation difference between "seuls" and "seules" https://translate.google.com/#auto/en/Nous%20sommes%20seuls.%20Nous%20sommes%20seules. Thank you.
"on" can be translated as "one" or as "we".
If you think about it, "We shouldn't do that" is similar to "One shouldn't do that" and these days we use these two type of sentences interchangeably, particularly because using "one" instead of "we" is considered old fashioned and snooty by some people.