一道全国高考英语阅读理解的句子!

LastweekmyyoungestsonandIvisitedmyfatherathisnewhomeinTucson,Arizona.Hemovedthereafewyearsago,andIwaseagertoseehisnewplaceandmeethisfriends.

Myearliestmemoriesofmyfatherareofatall,handsome,successfulmandevotedtohisworkandfamilybutuncomfortablewithhischildren.AsachildIlovedhim;asaschoolgirlandyoungadultIfearedhimandfeltbitterabouthim.HeseemedunhappywithmeunlessIgotstraightA'sandunhappywithmyboyfriendsiftheirfatherswerenotas"successful"ashewas.WheneverIwentoutwithhimonweekends,Iusedtostruggletothinkupthingstosay,feelingonguard.

Onthefirstdayofmyvisit,wewentoutwithoneofmyfather'sfriendsforlunchatanoutdoorcafe.Wewalkedalongthatafternoon,didsomeshopping,ateatthestreettable,andlaughedovermyson'sfunnyfacialexpressions.Gonewasmyfather'scriticalairandstrictrules.WhowasthispersonIknewasmyfather,whoseemedsofriendlyandinterestingtobearound?Whathadheldhimbackbefore?

Thenextdaymydadpulledouthischildhoodpicturesandtoldmequiteafewstoriesabouthisownchildhood.Althoughourtimestogetherbecameeasierovertheyears,Ineverfeltclosettohimatthatmoment.Aftersomanyyears,I'matlastseeinganothersideofmyfather.Andinsodoing,I'mdelightedwithmynewfriend.MydadinhisnewhomeinArizonaisbacktomefromwherehewas.

Andinsodoing,有什么句法结构呢?请帮忙回答下,Andinsodoing,在倒数第三行,

Andinsodoing,有什么语法现象呢?