英语时态：When all those present were seated he began his lecture.When all those present were seated he began his lecture.观众入场以后他才开始演讲,那观众入场就是过去的过去,应该用过去完成时的被动语态猜对呀,

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英语时态：When all those present were seated he began his lecture.When all those present were seated he began his lecture.观众入场以后他才开始演讲,那观众入场就是过去的过去,应该用过去完成时的被动语态猜对呀,
英语时态：When all those present were seated he began his lecture.
When all those present were seated he began his lecture.
观众入场以后他才开始演讲,那观众入场就是过去的过去,应该用过去完成时的被动语态猜对呀,为什么这里用的是一般过去时的被动语态?

英语时态：When all those present were seated he began his lecture.When all those present were seated he began his lecture.观众入场以后他才开始演讲,那观众入场就是过去的过去,应该用过去完成时的被动语态猜对呀,
Be seated,please.请坐.（很礼貌的用法）
seat sb.某人就座（有安排,使的意味）
seat 的特点是作动词时为及物动词,后面必须有宾语或用其被动语态
这里的When all those present were seated,只是一种观众就坐的状态
用When引导的时间状语从句
“那些到场的人全坐下时,他才开始演说”,
前半句是时间状语从句,且从句有被动意思.主从句时态保持一致,主句he began his lecture,为一般过去时态,所以从句也要用一般过去时态,

be seated意为“就坐”，就是坐好的意思，是静止的状态。而且本句不强调动作的先后啊，when是同时的意思

首先“be seated"是固定短语，意为 “坐下”，等于=“sit sown"，而不是表示被动。其次，表示过去的过去不一定非得用过去完成式，因为在这里动作的顺序表示的很清楚。又如：I wore the necklace (which) my grandmother (had) left me. 我戴着祖母留给我的项链。

were seated不是被动语态，而是系表结构，这里“seated"作形容词用，是指”他们“都”坐下“这种状态，所以用一般过去时。

英语时态：When all those present were seated he began his lecture.When all those present were seated he began his lecture.观众入场以后他才开始演讲,那观众入场就是过去的过去,应该用过去完成时的被动语态猜对呀, 英语时态练习题when怎么用 When everything is gone with the wind,when all those special moments into eternity. When all those present___he began his lecture.A.sit B.set C.seated D.were seated When all those present were seated he began his lecture 翻译 When all those present ___he began his lecture A,sit B set C seated Dwere seated When all those Present were seated.present 不用加S吗? 求英语复合句时态公式!比如When后面用什么时态?Since后面用什么时态?While后用什么时态?If后用什么时态? 英语时态问题：They _____(live) there all their lives.用哪一种时态?为什么? 时态填空：the trees all turn green when spring( )come.先谢谢!快快快！！！英语翻译给出的英语是这样的By letting it go it all gets done.The world is won by those who let it go.But when you try and try.The world is beyond winning.求原句, 英语帮忙分类this that when our slow suitcase these how jump those only them beijing airplane all ticket me stand plan jacket sing分为：动词有：代词有： when后可加什么时态 when从句时态应用? There comes a time in life,when you walk away from all the drama and people求英语高手There comes a time in life,when you walk away from all the drama and people who create it.Surround yourself with those who make you laugh,focus on the good.Love 英语,时态 When all those present(到场者)__ he began his lecture.A.sit B.set C.seated D.were seaed 英语when和while的区别when和while的区别,是用法上的区别.比如when前面什么时态,后面什么时态