【关于sentencefragmentMrs.Blancogonetovisithermotheratthehospital.Findingaparkingspacethereisusuallyeasyduringtheweek.Drivinginthecityduringtheeveningrushhour.Mybrotherhasbeenrunningacharterfishingboatforfiveyea】

　　关于sentencefragment

　　Mrs.Blancogonetovisithermotheratthehospital.

　　Findingaparkingspacethereisusuallyeasyduringtheweek.

　　Drivinginthecityduringtheeveningrushhour.

　　Mybrotherhasbeenrunningacharterfishingboatforfiveyears.

　　Manyofhiscustomerscomingbackthreeorfourtimesoverthesummer.

　　Hisbusinessbeensobusythathehasverylittletimeforanythingelse.

　　答案说只有第二句和第四句是完整的句子,请帮我分析下,为什么其他不是,我看不出来.

　　谢谢第一位的回答，但是请帮忙分析下不完整的句子。因为我现在看大部分都是有主谓宾的呀。最好是可以帮忙吧不对的句子修改成正确的。