理由, りゆう, わけ
reason, grounds, pretext, excuse, motive
どうしてあなたにお詫びする理由があるのですか。
が
Particle
1. indicates the subject of a sentence
literary in modern Japanese; usu. written as ヶ in place names
2. indicates possession
Conjunction
3. but, however, (and) yet, though, although, while
4. and
5. used after an introductory remark or explanation
ある, 有る, 在る
Conjugated: あって
Godan verb, Intransitive, See 居る・いる・1, Usually in kana, usu. of inanimate objects
1. to be, to exist, to live
2. to have
3. to be located
4. to be equipped with
5. to happen, to come about
悪いけどほかに用事があるの。
あう, 会う, 逢う, 遭う, 遇う
Conjugated: あって
Godan verb, Intransitive, 逢う is often used for close friends, etc. and may be associated with drama or pathos; 遭う may have an undesirable nuance
1. to meet, to encounter, to see
Usually in kana, esp. 遭う when in kanji
2. to have an accident, to have a bad experience
前に彼にあったのを覚えている。
合う, あう, おう
Conjugated: あって
Godan verb, Intransitive
1. to come together, to merge, to unite, to meet
2. to fit, to match, to suit, to agree with, to be correct
3. to be profitable, to be equitable
Auxiliary verb, after the -masu stem of a verb
4. to do ... to each other, to do ... together
このチョッキは前が合わない。
できる, 出来る
Conjugated: できない
Ichidan verb, Intransitive, Usually in kana
1. to be able to do, to be possible, to be permitted (to do)
2. to be good at, to do well, to be proficient (in), to be capable
3. to come into existence, to form, to appear, to come up (of a matter), to be born, to make (a friend), to get (a girlfriend, free time, etc.)
4. to be made, to be built, to be constructed, to be formed, to be established, to be set up
5. to be finished, to be completed, to be done, to be ready
あの二人はどうもできているらしい。