请问这句话为什么不用被动语态? The hunt for the puma began in a small village不用被动语态?把began换成started也不要用被动吗?还有As the evidence began to accumulate……,这里也没用被动,换成started呢?要不要

请问以下这句话为什么不用被动语态?All things considered,the planned trip had to be called off.为什么不用be considered? 请问这句话为什么不用被动语态? The hunt for the puma began in a small village不用被动语态?把began换成started也不要用被动吗?还有As the evidence began to accumulate……,这里也没用被动,换成started呢?要不要 请问这句话为什么不用被动语态?The hunt for the puma began in a small village不用被动语态?把began换成started也不要用被动吗?还有As the evidence began to accumulate……,这里也没用被动,换成started呢?要不要用 The search proved difficult.这句话为什么不用被动语态这句话为什么不用被动语态?如果用被动在proved前面加个was就可以了吧 The book cost me 5 yuan.为什么不用被动语态 The medicine tastes bitter.为什么不用被动语态? 请问这里为什么不用被动语态?语法书里写到,有一种动词可用做及物和不及物动词,这涉及宾语变为主语的情况,如：He opened he door.The door opened.请问第二句应该是被动语态形式吧? 语法:感官动词的被动语态I'm feeling the fur coat.我在摸这件毛皮大衣.请问上面这句话可不可以变为被动语态?怎样变?请问,它变成被动语态之后还可以是进行时吗? 关于called和named的被动语态The basketball game was started by Canadian doctor named James Naismith.这句话中为什么named不是被动语态 关于被动语态,My pets take a lot of time to look after.这句话中,宠物是被人照顾的,为什么不用被动呢? 及物动词什么时候不用被动语态还有the door opened为什么不用被动语态?the door open有这样说的么？the door opened为什么是不及物动词呢？ IN THE CITY THE OLD (ARE TAKEN GOOD CARE OF)为什么不用被动语态? 又麻烦你,Such information also proves helpful in understanding the pathophysiology of heart disease.这句话为什么不用被动语态,不是应该这样才对吗：Such information also be proved helpful in understanding the pathophysiology of 请问这句话是被动语态吗?Two other scientists and I were drivenup the mountain and dropped. the shop will___in a deep night.be closed还是close我记得我学的时候是：商店关门不用被动语态,那么这句话为什么选第一个（答案给的）.请说明原因, If I was offered the job.I think I would take it.请问这里为什么要问被动语态呢?不用可以吗?最好有例句哦, what the future holds 为什么不用被动语态?未来应是被hold啊? the TV set needs ( ) 为什么用 mending 而不用 to mend 是被动语态吗