不屈不挠类似的词语

请问过去完成时态用法?I haven't had the car checked since February.请问其中的 had the car checked 为什么这样写,我小时写成had checked the car ,可以吗?请帮我解释一下,谢谢! as busy as a bee这个英语什么读 要参加讲故事大赛讲什么故事好?不要太幼稚的,像成语故事寓言故事就算了, I'm at home with my sister.改同义句MY sister is ___ ___with me They used to d---- generously to the Red Cross every year. 33.Paper produced every year is __ the world's production of vehicles.a.the three times weight ofb.three times the weight of c.as three times heavy as d.three times as heavier 选什么,为什么 World Book Day falls on April 23 every year .这里面的falls on 当什么讲为什么这么用? Every year many natural d____,such as fire ,flood,happenin the world . i want to know( ).他叫什么名字 All I Wanna Know-Brosis Every day is so boring.Do not know what to do.啥意思 watching Tv every day is boring(对is boring提问watching Tv every day?前面有四个空唉 it is boring clean the rooms every day对吗 Every day I play at home is boring well,and you? but i know for sure 的翻译 for sure I know who are you!帮忙翻译成中文好吗 have it all have seen it all before是什么意思 we could have it all p开头的单词（食物 厨房用具）四个字，后面是e，m b开头m结尾的食物或厨房用品单词 为什么是lucy is a friend of li lei而不是lucy is a friend of li lei′s This is Li Lei.He is ( ) my friends.A.me B.one of C.he D./ mr li is a friend of _ Go shopping and eat every day.Is my favorite什么意思 My heart is with you ride every day My future is in your every day.这句话可以怎么翻译 尽量往深的那方向走.可能语法有错误?但是也请翻译下. 英语翻译Memories,sharp as daggers Pierce into the flesh of today Suicide of love took away all that matters And buried the remains in an unmarked grave in your heart With the venomous kiss you gave me I'm killing loneliness (Killing loneliness) W 高一的如何判断风的方向 怎么来判断实际的风的方向?自行车骑的快的时候,不论风是那个方向来的,都会感觉到像是向后刮去的一样.这是什么原因?这种情况下怎么来判断实际的风的方向? 既然电压与电流成正比,为何不用电流与电压的比值定义物理量呢?在验证欧姆定律中,保持被测电阻不变,得到一组电流和电压数据,我们发现电流于电阻是成正比的,紧接着课本上R=U/I就出现了, 下面的物理量都是用比值定义的其中定义式正确的是?a=F/m;B=F/qv;E=kQ/r的平方；R=U/I