知る, 識る, しる
Conjugated: 知っています
Godan verb, Transitive
1. to know, to be aware (of), to be conscious (of), to learn (of), to find out, to discover
2. to sense, to feel, to notice, to realize
3. to understand, to comprehend, to grasp, to appreciate
4. to remember, to be familiar with, to be acquainted with
5. to experience, to go through, to know (e.g. hardship)
あなたは1990年から彼女を知っているのですか?
か
Particle, at sentence end
1. indicates a question
after each alternative
2. or, whether or not
See 何か・1, after an interrogative
3. some- (e.g. something, someone)
indicates doubt, uncertainty, etc.; sometimes after other particles
4. hmm, huh
Prefix, See か弱い, emphatic prefix; usu. before an adjective
5. very
か, 箇, 個, 个, カ
Counter, Usually in kana, precedes the thing being counted; e.g. 3か月, 5か所; also written as ヶ or ケ
counter used with Sino-Japanese words