灭火器类型和使用对象

Hello!I _____to ask you for help again .填hava come 为什么要用现在完成时 We both tried to get the coins.They are both students.Both of them are students.第一句中的both是同位语,那第二句和第三句的呢? We both tried to get the coins.变同义句____of_____ tried to get the coins. we both tried to get the coins这里面get是什么意思 cannot,can not ,can`t区别can not,cannot就是can的否定形式,美国习惯分开些,英国一般连写.can't就是缩写和简读的格式? cannot和can not和can't一样吗?有什么区别! do not &don't；can not &cannot&can't 区别是什么?如题,谢谢! can't与can not,cannot在情感上有什么区别? i persuade her to go to school 的否定句是i persuade her not to 还是i do not persuadewhy I'm wondering why I got out of bed at all 不明白自己为什么要起床I'm wondering why I got out of bed at all 的意思是:不明白自己为什么要起床I'm wondering why I got out of bed 的意思是:我知道我为什么要起床谁能告 get out of It is a big meal对a big提问迅速 could you tell me how i can make great progress in english?同义句转换could you tell me ___ ___ ___great progress in english? 滚的英文 Is Lis ( ) home.( )中应该填什么介词?I went ( ) New York last year.( )中应该填什么介词? 画龙点睛的注释译文全面的 画龙点睛,深度的解释这是什么意思. 欺骗爱的请滚 英文怎么写 "爱情,请给我滚"这话英文怎样读?请给正确的答案我,兄弟姐妹们,你们可别让我糗大了, 滚吧,爱情.的英文是什么? Have a look at them!中look是什么词?等于什么词?此句中at可以不要吗? 急：英语翻译“不爱我就滚”要人工翻译 为什么是i like looke at them 不是looking 滚.你.妈.的爱情 英语怎么说啊 蔡的英文是Choi Tsoi 还是Tsai? 蔡修辉英文名字这么拼?帮我拼下谢谢!蔡英文是Choi/Tsai 帮我吧修辉拼出来. 请问“Choi”这个英文的姓氏单词怎么读?请问在英文中姓氏“蔡”的英文是“Choi”,但我不知道“Choi”怎么读,我不知道怎么发音,把音标给我说一下吧, “出去”、“滚”用英语怎么讲?不是连在一起，它们分别怎么说？ Many of them liked to say something about it,but ( )would do it A.few B.a few C.little D.a little 滚花,用英语怎么讲啊? 有a little time这个词组吗可以给我准确的答案吗 非谓语中不定式的完成式和动名词完成式有没有区别,例如：i am sorry to have kept you waiting so long能不能改为i am sorry having kept you waiting so long?