1. by the time
My fear is that, by the time we get something done, the European industry will have gone out of business.
Pterosaurus had already disappeared by the time modern birds evolved.
by the time they got home, it had grown dark
英語 "という言葉do czasu gdy"(by the time)集合で発生します。
FCE Unit 7,8 the restSpeakOut semestr I