〜ことだし

About

～ことだし ("since; seeing as how") is used to convey an incomplete list of reasons for X.

〜ことだし is light in tone, and is mainly used in casual situations.

E.g. 引ひっ越こしの準備じゅんびも終おわったことだし、今夜こんやはゆっくり映画えいがでも見みようか。 "Since we've finished preparing to move, should we chill out and watch a movie tonight?"

E.g. 試験しけんも近ちかいことだし、明日あしたは家いえで勉強べんきょうするよ。 "Seeing as how (my) test is coming up, I'll study at home tomorrow."

E.g. あの人は有名ゆうめいなことだし、すぐスポンサーも見みつかると思おもう。 "Seeing as how that person is famous and whatnot, I think they'll find sponsors right away."

〜ことだし indicates that there are other, unmentioned reasons as well.

〜ことだし can become 〜ことですし in polite scenarios.

Summary

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  ～ことだし means "since; seeing as how"

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  ～ことだし is used to convey an incomplete list of reasons for X