早教吧作业答案频道 -->英语-->
最后的hadbeenproduced为什么用过去完成时,是不是因为wereportrayed?另外为什么不用are而用were?Between1897and1919,atleast29motionpicturesinwhichartificialbeingswereportrayedhadbeenproduced
题目详情
最后的had been produced为什么用过去完成时,是不是因为were portrayed?另外为什么不用are而用were?
Between 1897 and 1919,at least 29 motion pictures in which artificial beings were portrayed had been produced
Between 1897 and 1919,at least 29 motion pictures in which artificial beings were portrayed had been produced
▼优质解答
答案和解析
因为时间是过去的时间,所以用过去时,are要变成were.用过去完成时是因为produce这个动作比定语从句中过去的动作were portrayed更早完成,所以用过去完成时
看了 最后的hadbeenprod...的网友还看了以下:
1.已有定义inta[10],*p;则正确的赋值语句是().A.p=100;B.p=a[5];C.p 2020-03-31 …
如果事件A,B满足.ACB则必有a.P(A)<P(B)b.P(A)>P(B)c.P(A)≤P(B) 2020-04-07 …
这个怎么算?已知P(A)=P(B)=P(C)=1/4,P(AB)=0,P(AC)=P(BC)=1/ 2020-05-13 …
概率论与数理统计里的一道证明题设本题涉及的事件均有意义,设A,B都是事件.1.已知P(A)>0,证 2020-06-18 …
设如果当事件A与B同时发生时,事件C必发生,则有(A)P(C)≤P(A)+P(B)-1(B)P(C) 2020-11-05 …
求概率的题~P(A)=0.14P(B)=0.23P(C)=0.37P(A交B)=0.08P(A交C) 2020-11-28 …
已知abc两两相互独立,求证P(a交b交c)=p(a)p(b)p(c)已知ab相互独立,求证a已知a 2020-12-01 …
7,如果事件ABC相互独立,则下列等式中正确的是()A,P(A+B+C)=P(A)+P(B)+P(C 2020-12-01 …
c++关于指针(8)已知数组A和指针p定义为:intA[20][10],*p;,要使p指向A的首元素 2020-12-31 …
若事件AB同时发生必然导致事件C发生,则()a.P(C)=P(AB)b.P(C)≤P(AB)c.P( 2021-01-01 …