聚丁二烯是什么

the parents were aworking couple 中working是动名词,还是现在分词?为什么? CNblue的Try again,Smile again的中文歌词!我知道是英文歌,我要的是翻译的中文 fell down ,fell out ,fell off的区别在哪里有关fell的短语麻烦解答 最好有例句 fell down 和fell off2者有何分别?最好有例子～ we're writing letters to our grandma.改否定句怎么改? 词组是由动词和介词组成的,怎样自己组合,比如为什么deal后面就加with,能不能自己组合.英语问题少年就是我 the way you deal with something 是什么语法结构,应不应该在something后加介词by It is on the street on the right.这句话对吗 It t____ Tom half an hour to get home everyday. 英语翻译The tree or server cannot be found.Choose a different tree or server.Select the Workstation Only check box to log in to the local workstation.Would you still like to try to log in to windows? The student was made ----- there for half an hour.A.stand B.to stand C.standing D.stands His careless mistake made the machine______ for half an hourA.PICK UP B.END UP C.PACK UP D.GIVE UP after half an hour's explanation,the teacher made the instruction （ ）by the students at lastA.to understand B.understoodC.understandingD.to be understood Julia has a card.Julia has a cake.Julia has two presents.请问and加在哪里好?还有可以告我"and"怎麼 when jacob was16,his father died suddenly,leaving him three sisters and four brothers_ AsupportingB supported Cto support Dto be supported a photo of sb 与 a photo of sb's 有什么区别? a picture of sb; one's picture 英语翻译有谁知道上面那句话是什么意思啊 He wants to kick the first goal for china in kick the winning goal翻成中文什么意思阿? keep是系动词吗? WE PLAY FOR THE GOAL!的意思 Strive for the goal的意思? can not connect gameserver给我解决方案啊 我要进去 WE KICK FOR THE same,do ,have,people,the,DNA?2 I,foreign,to,learn,want,cultures.连词成句buy,he,would,he,new,said,a,next,bike,month,the.连词成句 connect automatically是什么意思 automatically connect tointernet after starting program是什么意思 Chinese is very useful for us.(用soon改写） Chinese__Chinese is very useful for us.(用soon改写）Chinese______ ______ very useful for Americans soon. The more you care the more you have to lThe more you care the more you have to lose. 请问系动词有没有被动语态? 系动词可用于被动语态吗