YOU SAID:

But why should he leave us behind, and without a word?

INTO JAPANESE

しかし、なぜ彼は何も言わずに私たちを置いて去っていくのでしょうか?

BACK INTO ENGLISH

But why would he just leave us without a word?

INTO JAPANESE

しかし、なぜ彼は何も言わずに私たちのもとを去ったのでしょうか?

BACK INTO ENGLISH

But why did he leave us without a word?

INTO JAPANESE

しかし、なぜ彼は何も言わずに私たちのもとを去ったのでしょうか?

BACK INTO ENGLISH

But why did he leave us without a word?