We have come across an exception おきます (to happen) this time.
Following the logic we have gone through, the verb おきます should belong to Group 1 as the final vowel sound is い before ます. Therefore, おきます in masu form should become おく in dictionary form.
However, it somehow belongs to Group 2...Therefore, おきます in masu form becomes おきる in dictionary form.
Although such exceptions are rare, unfortunately, some of them are often used in our daily conversations.
The exceptions at JLPT N4 level are such as the following:
おきます (to happen) かります (to borrow and rent) あびます (to be poured from above) おります (to get off and get out of) たります (to become enough) すぎます (to pass) おちます (to drop) そんじます (to know)
By the way, if you learn verbs in dictionary form first, you can avoid such exceptions. By looking at verbs in dictionary form negative (also know as ない form), you can distinguish more accurately and that is why books such as Genki series introduce dictionary form first.
Is masu form first or dictionary form first? It's a chicken and egg debate among Japanese teachers :)
[ ますフォームで覚える動詞 ] 動詞 Group 2 の例外
Directed and Filmed by Masa Edited by anmi from CRAIC FILM HOUSE