Before Captain Cook went to the Antarctic, he had been to Australia.
Before Captain Cook went to his last expedition to Hawaii, ha had been to Australia, the Antarctic and the Arctic.
Captain Cook had been to Australia before he visited the Antarctic.
Before Captain Cook went to the Arctic in 1775, he had been to Australia and the Antarctic.
Before Captain Cook explored Hawaii, he had visited the Arctic in 1775.
Captain Cook had joined the Navy before he went to Australia.