competition starts from a very young age的意思以及这里包含的句型麻烦再根据句型帮忙造个句

Competition between families starts at a yong age. in some families competition starts from a very young age为什么用谓语动词三单现stars 请讲解一下competition between families starts at a young age只是问问为什么没有be competition starts from a very young age的意思以及这里包含的句型麻烦再根据句型帮忙造个句 Every day she starts work at nine and f( ) at five. Our school starts at 7：40,and （f ）at 4：30. competition是什么意思 shorus competition competition-based will you e( ) f( )the writing competition next week.e和f开头的应该填什么? My class starts at 7;30 A.M.and f-------at 5;00 P.M 根据首字母提示填空 My class starts at 7;30 A.M. and f-------at 5;00 P.M 根据首字母提示填空 In a society marked by competition,people have to face up eith all kinds f pressure.这里的mark是什么意思?.. It starts with one it starts with FITS AND STARTS怎么样 英语翻译第一：Competition between families starts at a young age.第二：I was used to eating with chopsticks and a spoon,but I had to eat with a knife,a fork and a spoon.And I had not just one set to use,but two or three of each.（另外这 in the competition是什么意思?