it has four windows.此句中it是主語(yǔ),has是謂語(yǔ),four windows是賓語(yǔ).
my name is zhao gang.my name是主語(yǔ),is是謂語(yǔ),zhao gang是表語(yǔ).
I sit behindn li lei.i是主語(yǔ),sit是謂語(yǔ),behindn li lei是地點(diǎn)狀語(yǔ)
I thank him very much.i是主語(yǔ),thank是謂語(yǔ),him是賓語(yǔ),very much是狀語(yǔ),修飾動(dòng)詞thank