-ing分词做状语: -ing分词作状语可以表示时间、原因、结果、条件、让步、方式或伴随情况等。 ①-ing分词短语作时间状语,有时可由连词when, while引出。如: Be careful while/when crossing the road. 当看到那些画,她想起了她的童年。 Seeing those pictures, she remembered her childhood. ==》When she saw …