问题描述：
After 引导的分语短语,如何正确使用?
1 After having unscrewed,the Officer put the bottle to his nostrils.
2 After rowing a few miles across the Caribbean,they arrived at a small coral island.
1 After having unscrewed,the Officer put the bottle to his nostrils.
2 After rowing a few miles across the Caribbean,they arrived at a small coral island.
问题解答：
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