"I am a woman."
Translation:Ik ben een vrouw.
Good question. There are three genders: masculine, feminine and neuter. However, in standard Dutch, no distinction is really made between masculine and feminine. Those genders have merged to become "de" (for the definite article). The neuter definite article is "het". Belgian speakers of Dutch do generally make this distinction though.
What Sven sais is correct. Also the neuter indefinite article is the same "Ik ben een kind." And BTW you can regard masculine and feminine as one gender (de words), only in a few rare cases (don't worry about them as a beginner, FYI many native speakers also go wrong is those rare cases) there is some difference.
There is an annoying exception though, when ben(t) comes before jij rather than after (for instance in a question) you also drop the t, so Ik ben een vrouw. Ben ik een vrouw? Jij bent een vrouw. Ben jij een vrouw? U bent een vrouw. Bent u een vrouw?
(U is a formal you whereas jij/je is an informal you)
This structure is true for most verbs. For most verbs they will have a infinitive ('hele werkwoord') form that looks like stem+en (stam+en) (although there are exceptions and cases where the stem ends up with a double consonant so one of them is dropped if you use the stem in other cases such as the stem of likken is lik not likk, there are also cases where the spelling of the infinitive has a long vowel sound that would get lost by just taking away the -en, so for instance the stem of lopen becomes loop rather than lop to preserve the long vowel sound, and some verbs are irregular and just have a stem that is unrelated to the infinitve in spelling), and using that stem (stam) we can derive:
Ik stam Jij/je stam+t U stam+t Stam ik? Stam jij/je? Stam+t u?
For regular verbs, the pattern continues Hij/zij stam+t Stam+t hij/zij?
For irregular verbs, such as 'to be' (zijn) it doesnt really follow a pattern and you just need to know it; the stem to use for the ik en jij is ben as we've already seen above, but for he/she we use 'is' so Hij is een man. Is hij een man? Zij is een vrouw. Is zij een vrouw?
For plural (both regular and irregular), the infinitive is used.
Dutch only has three articles: 'de', 'het', and 'een'. 'een' is indefinite, and 'de' and 'het' are both definite. There aren't specific rules for those. You really have to learn and remember which one to use for which word. 'Het huis' (the house), 'de boot' (the boat). It's difficult for foreigners to get their heads around :P