因为stress本身有两种词性,名词和动词,当它作动词解是“使紧张”,动词+ed就是过去分词作形容词,stressed out一般在句中作表语.

stressed是形容词,在这里不是时态,是常用语 象be scared, 表示被动

stresseda.1. (用作表语)紧张的,感到有压力的

be stressed out 表示“紧张的,有压力的”,是一个固定搭配.其中be 的形式有are/is/am等.比如:when you are stressed out, you shouldn't study.当你压力大的时候,就不应该学习了.其中be动词无意,后面接形容词stressed作表语,out是副词,用供顶垛雇艹概讹谁番京来加强语气,修饰前面的形容词stressed.祝你学习进步,更上一层楼!请记得采纳,谢谢!(*^__^*)

i am streesed out by those exams

stressed out ＂紧张的;有压力的”,是形容词,形容人的,人做其主语,所以要加edeg.He is stressed out.他压力很大.而stress是名词或动词,不能用来形容人

be stressed in强调下面是例句,你看一下用法An emphasis on personal hygiene should be stressed in everyday life.每天生活中,应该著重个人卫生.The region of the Asian Pacific-ocean will be stressed in the regional military strategy.在地区军事战略中,将亚太地区视为重点;希望能采纳,谢谢了

involve in是涉及,卷入,参与,involvein使介入,involve sb in sth使某人从事于,参加,进行,engage sb in让某人从事于,engage oneself in正做着.,participate in是参加,分享,是指参与别人在做的事或活动或什么过程 take part in是参加,参与什么活动 join in也是参加某项活动 join是加入什么组织,团体或加入别人一起去做什么事

(1) 用作谓语动词的主动语态:Sarah prepared diner for her parents.(2) 用作谓语动词的被动语态:Diner had been prepared by Sarah before her parents came back.(3) 动词不定式做补语:The diner took two hours to prepare.固定短语:(1)

因为后面多了一个介词短语做后置定语 赢得来自她的学生的尊敬