Unit 3: GrammarThe Revision of Past participleLead-in exercise: Fill in the blanks. 1. _ (pollute) air and water are harmful to peoples health.2. The problem _ ( 在会议 上讨论的) yesterday was very difficult to solve.3. He became _ ( 兴奋) when he heard he had won the first place in the competition.4. I havent got the film _(develop) yet.5. Do you know the man _( 坐) beside the door?Polluteddiscussed at the meetingthrilleddevelopedsittingThe Little Match GirlUsing Past Participles to describe the storyTas
