精选优质文档-倾情为你奉上Unit 2 Ill help to clean up the city parks.Section A1. You should help to clean up the city parks.Clean up意为“彻底打扫；清除”，是“动词+副词”结构的短语动词，后面跟名词作宾格时，名词放在up前后均可，后面跟代词作宾格时，代词应当放在up前面。e.g. He often helps parents clean up the rooms on weekends.2. The girl could visit the sick kids in the hospital to cheer them up.Cheer up意为“变得更高兴，振奋起来”，是“动词+副词”结构的短语，cheer up既可以作及物动词短语，也可以作不及物动词短语e.g. He cheered up at once when I agreed to help him. Cheer up! The news isnt too bad.
