Kevinka san,
Konnichiwa.
Have you learnt intransitive verbs and transitive verbs?
Okiru (okimasu) and okosu (okoshimasu) are different.
Okiru is an intransitive verb and okosu is a transitive verb.
A sentence structure which intransitive verbs take is
Someone ga intransitive verb
For example,
Watashi ga okiru.
Haha ga shichiji ni okimasu.
Okite kudasai. (please wake up.)
A sentence structure which transitive verbs take is
Someone ga something/the other o transitive verb.
For instance,
Chich ga watashi o okosu.
Haha ga hachiji ni chichi o okoshimasu.
Goji ni okoshite kudasai. (please wake me up at 5 o’clock.)
Consequently, okose is ‘wake me up’ and okiro is ‘wake up.’
Yuki 由紀
Team JapanesePod101.com