YOU SAID:

I slapped a cucumber with a fish because i was running from a dinosaur

INTO JAPANESE

私は恐竜から走っていたので、私は魚でキュウリを平手打ち

BACK INTO ENGLISH

I was running from a dinosaur, so I slapped a cucumber with a fish

INTO JAPANESE

私は恐竜から走っていたので、私は魚でキュウリを平手打ちした

BACK INTO ENGLISH

I was running from a dinosaur, so I slapped a cucumber with a fish