All our efforts are of no effect,为什么要加of?

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• 先行词是the way,place,time,reason关系副、代词何时可省?为什么这句要加where:We've all used thermometers to measure temperature but sometimes we need to measure temperature in places WHERE you can't put a thermometer.语法说,先行词是the way,表示方式,可用that（可省）或in which来引导一个定语从句.如果先行词是时 间或原因,也可用that（可省）或when或why来引导定语从句.如：（1）This was the reason that/why he was late yesterday.（2）This is the last time that I shall give you a lesson.这句是道改错题,还要加上where 是什么原因?没表达清楚，我的意思是that代替关系副词，那么我这道改错题为何还要加
• what you had done added to our difficulties.帮忙分析这个句子为什么add后要加ed
• The snowstorm added to our difficulties.为什么要加to,add是及物动词呀
• He is following us all the time,为什么follow要加ing原题是He ——（follow） us all the time
• To our surprise,minutes later ,a man wearing the same clothes came up to us.请问wear为什么要加ing?
• covering them with all the clothes she could find这里的cover为什么要加ing形式呢?
• 英语 add在字典中有及物与不及物,但意思都一样,是增加,增添,要怎样区别啊?（最好举例说明）怎样就知道它后面要不要加介词？The snowstorm added （ ）our difficulties.这里也不应该加介词？为什么？
• she has to clean all the furniture in all the bedrooms in two hours这句话当中的furniture和bedrooms 为什么一个要加s一个不用加s的?The young students like dickens' and Mark Twain's novels very much这句话当中的人名dickens'和Mark Twain's 的s用法为什么不一样的?I have a lot of work to do 为什么要用a lot of 用many work 不行吗?还有就是那个work后面不能加s的?
• 1 -- what's all that noise?--just in front of the bus ___ an injured man,all covered with blood.A,lies B,lying is请问为什么要选第三人称单数的A 而不选表示状态的B选项？2 -- Look at the trouble we're in.If only we ___our teacher's advice!A,would have taken B,had taken请问为什么选择过去完成时的B而不选择现在完成时的A 3--With the country's population reaching 1.6billion in the mid of this century,most of China's rivers,inclouding the Yellow River,_____.A,is drying up B,will be drying up.为什么选择B 而不能选择一般现在时
• 每个选项都要!\(^o^)/~1.The question was not as simple as it____C____.A.supposed toB.supposed to beC.was supposed to beD.was supposed请问什么时候动词后面要加to或to be作结尾的词缀?2.What do you think of the campus life in our high school?Frankly speaking,I ___A___ so busy.A.never thought I'd beenB.wouldn't think I'd been(我知道这个为什么错)C.have never thought I'll be(我就选了这个)D.have never thought I was(我知道这个为什么错)
• I hope I can go to the beach 的同义句
• I hope I can go to England同义句