Have your mechanics finished yetHave your mechanics finished yet?句中的your mechanics是单三吗?如果是为什么不用has?Can your mechanics repair it?为什么第一句用finished,第二句用repair?第一句可以也用repair吗

Have your mechanics finished yet?肯定回答 Have your mechanics finished yetHave your mechanics finished yet?句中的your mechanics是单三吗?如果是为什么不用has?Can your mechanics repair it?为什么第一句用finished,第二句用repair?第一句可以也用repair吗 have your mechanics finished yet?请问yet在这里是已经得意思吗? Have your mechanics finished yet?你们的机械师修好了吗?请问的是finished在这个句子中是过去式还是过去分词?方便的话展开一下 have和do作助动词的区别如题,在什么时候用have什么时候用do?例如：Have your mechanics finished yet?可以改成Did your mechanics finish yet?我就是问什么时候用HAVE什么时候用DO阿有详细点的说法没 再如：How mechanics school auto mechanics That's right.I drove it into a lamp-post.Can your mechanics repair it? governing mechanics是什么意思Though interlocking puzzles have been known for hundreds of years,very little is known about the governing mechanics.求翻译 用already,ever,never,just,yet填空I have____brought my car to the garage.The mechanics are working on it.Have you___been to Finland?I have___seen such interesting film.It's great.Have you told the truth to your father___?How delicious the food. Yes 用already、ever、never,just,yet填空1.I have_____brought my car to the garage.The mechanics are working on it.2.Have you_____been to Finland?3.I have_____seen such interesting film.It's great.4.Have you told the truth to your father_____?5.How de 1.The have some problems ____(travel) out.2.The mechanics need to keep______(work) on the car I have pursued my studying relativity and quantum mechanics这句英语是否有语病,语法结构是怎样的 theoretical mechanics是什么意思 theoretical mechanics是什么意思 fluid mechanics是什么意思 fluid mechanics是什么意思 QUANTUM MECHANICS怎么样