摘要：1．表示时间.相当于一个时间状语从句. Seeing those pictures, she remembered her childhood. 看到那些画.她想起了自己的童年.(= When she saw those pictures...) Having made full preparations, we are ready for the examination. 我们已经作好了充分准备.现在可以应考了.(= After we have made full preparation...)

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