Look at the following sentence which we learned recently.
1. Ichi nichi ni San kai Gohan o Tabemasu. (I eat meals three times a day.)
The word “Ichi nichi” with particle “-ni” works as a reference time when talking about frequency.
However, today’s expression doesn’t have the particle “-ni” for a word of time period. It is because;
– Time period in the sentence is not a reference time to talk about frequency.
– The purpose is to talk about the time period itself.
– Even without the particle “-ni”, the word of time period can work as an adverbial.
Look at the following conversation and try to remember it;
A : Daigaku de Donokurai Nihongo o Benkyoushimashitaka.
(How long did you study Japanese in the university?)
B : Daigaku de Yo nen Nihongo o Benkyoushimashita.
(I studied Japanese four years in the university.)
This post was written with reference to the exercise A5 on Section 11 of “Minna no Nihongo” published by “3A Corporation”