Usages of mos
비행기 안에서는 전화를 못 해요.bihaenggi aneseoneun jeonhwareul mos haeyo.
You can’t make phone calls on the plane.
시간이 없어서 편지를 못 써요.sigani eobseoseo pyeonjireul mos sseoyo.
I can’t write a letter because I don’t have time.
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