6、t photo bus life half child woman toothParentsphotosbuseslives haves children women teeth2、频度副词often,always,sometimes等在句中的位置是有规律的,请写出这些规律,并各举一个例句。1).动词tobe之后:a.Iamoftenillonplanes.b.Sheisalwaysathomeatnight.c.Theyaresometimeskeenonplayingcards.2).实意动词之前:a.IusuallyworkonFriday.b.Toms