When conjugating yaru to yarimasu, does it become やあります or やります?
closed as unclear what you're asking by macraf, Sjiveru, Blavius, Amani Kilumanga, snailboat♦ Feb 5 '16 at 6:05
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Grammatically speaking, やあります is just plain wrong. It never conjugates to やあります.
Such a spelling may be used when someone said やります with a strange intonation (like "I wiiil dooo it"), but it should be rare.
I'm going to assume you mean yarimasu instead of arimasu. Arimasu comes from aru (to be). ある -> あり -> あります
やる yaru conjugates to やります yarimasu.
やあります in romaji is yaarimasu, which would be stretching the "a" sound for no reason.
Masu-form conjugation simply involves changing the u hiragana to its i counterpart and then adding masu for godan verbs (yaru -> yari -> yarimasu), or dropping the ru and then adding masu for for ichidan verbs (taberu -> tabe -> tabemasu). The irregular verbs, suru and kuru turn to shimasu and kimasu.
Godan verb examples:
いく to go -> いき -> いきます, not いいきます
かう to buy -> かい -> かいます, not かあいます
まつ* to wait -> まち -> まちます, not まあちます. Note that つ changes to ち since they are in the same row of the hiragana table.
よむ to read -> よみ -> よみます, not よおみます
さす* to hold up (eg. an umbrella) -> さし -> さします, not さあします. Note that す changes to し since they are in the same row of the hiragana table.
Ichidan verb examples:
みる to see -> み -> みます, not みいます
ねる to sleep -> ね -> ねます, not ねえます