Unit 10 Environment,Reading-Under the sky,1.asas 2.no longer 3.ued to do 4.be dressed in5.a blanket of 6.in the world 7.traffic jam 8.serious problem9.at the same time 10.give out 11.air quality,一、1.动词的-ing形式是由_加词尾_构成,是一种_。动词的形式及其短语可以在句中作_、_、_、_、_、_。,2、.有些动词及短语后只能接动词的-ing形式作宾语,不可接动词不定式,如:_、_、_、_、_、_、_、_、_、_、_._、_、_、_、_、_、_、_、_、_、_。,