"I write a letter."
Translation:J'écris une lettre.
You have to use a contraction. Kind of how we use don't for "do not." So, in French you never have to vowels next to each other for separate words. So instead of Je ecris, you say J'ecris. It's also easier to say. Having to pronounce both vowels creates more effort and breaks the phrase
Most objects that end with an "e" in french are feminine (i.e. une table, une lettre...) but it's not the law. Like english, there are many unexplainable exceptions. Any french dictionary will tell you the 'gender' of every object. For grammar, look for a book called La Becherelle. It has been the Bible for french immersion for decades, and has every single verb and tense in the french language. :)
katgold- Wrong, it's only a hint and you shouldn't stick on this because it isn't a rule. In Spanish many words finishing in A are masculine and the same for words finishing in o. problema is masculine and it finishshes in A. In French some learners say thet nouns finishing by E are feminine, sometimes true, sometimes wrong. le gendre / the son-in-law. le membre/ the member. plasma, masculine. And many more.
The best advice I can offer is to get a piece of paper and 2 different color markers or colored pencils. On one side in one color list masculine words with their articles and on the other in a different color list feminine words with their articles. Add more as you learn more and refer back to them. After awhile you'll know which are which. There seems to be no rhyme or reason to why something is masculine or feminine. You just have to learn them.
It may seem like a lot now but trust me it will get easier. Just hang in there and don't give up. I was there too.