Hi! I wasn't sure about what adjective to use for this sentence so I asked on another site and found out it depends on what you mean by "difficult". If it was a busy or hectic week, then say: この一週間忙しかったです。
If it was an emotionally hard to cope with week: この一週間辛かったです。
The adjectives are 忙しい (busy, hectic) and 辛い (painful, emotionally difficult) and in both sentences, they are in the past tense: 忙しかった, 辛かった.
November 19, 2016 at 5:38am