当取何值时有非零解？当方程组有非零解

What language _________ he and his friends speak?这里为什么用DO不用DOES?那为什么有些句子里面是看前者或者后者得呢 比如His mother and he is watching TV He can't what he should take to his friend's birthday.改为同义句He can't what ___ ___ to his friend's birthday. -What did he do last Sunday?-He___to see his friends.A.go B.went C.goesThe students watch movie.（改为现在进行时）I will play football tomorrow afternoon.（改为同义句） "He gave over his car to his friend"这句话有语法错误吗?如果没有,如何翻译? What dose he have for his friend?什么意思 i love u more than u think more common than you You think nothing is more important than to care for your sons.哪里错了 i love you more than u think,yddbddlglncdyu.--BY what were you order 和 what were you to have order 有区别吗 英文歌好听好吗?怎么有的说听不懂就说不好听 cross the bridge 和 over the bridge 的不同,over,through,cross用在bridge上有什么区别!都可以用吗? cross over mountain 和through the mountain 有什么区别?如果说cross是从表面,through是从内部,那么这个理解成“从山上经过”和“从山内部通过（比如隧道）”的意思吗? No man is angry that feels not himself hurt,这个是什么从句,that 引导什么从句,that做什么成分.越详细越好,涉及越广越好,宾语从句？宾语是哪个?angry是表语啊，这个是不是主语补足语啊？ Others in public eating-places are waiting for you to finish so they ,too,can be served and get back to work within the time allowed.这句话怎么翻译比较好?so的前面为什么不用逗号?so they too在这里做什么成分? What you believe if the world betrayed you.What you believe. If the world betrayed you I will stand behind you, betraying the world .那位大侠给翻译翻译!谢谢了! this is the only solution possible ,和this is the only possible solution 两者的possible 位置怎么不同呢?楼下说强调，能不能举个例子，是不是只有类似possible 之类形容词可以变换位置？ 请英语语法高手帮忙1. The book was sent to me by him“..to me by him ”to me 为什么不放在 by him 后面. 2. The letter was being written by me when you came.“..by me when you came”为什么when you came不在by me 前面呢?3. I h 1 the total absence of fishing boats around the oil rigs.fishing 在这作动名词还是现在分词作定语？如何区分？2but favourite eating varieties eating是动名词还是现在分词作定语如何区分？3So it comes as a surprise to If I disappear to reconcile you hate at heart,I will disappear!什么汉语意思? 英语翻译It was fun hanging onto the moon,heading into the sun. love triangle set是啥意思?in 1955 Graham Greene wrote his famous novel "The Quiet American",a love triangle set in the last days of French colonial rule in Indochina and the beginning of the American presence. SNMP通信协议中的Get、Set、Trap是何含义 请详细说明SOHO的优缺点?最好有英语翻译,大概5分钟左右 英语翻译100910191190 火星撞地球会怎样 火星撞地球有可能吗? 火星撞地球会发生吗?如果会发生,概率是多少? 为什么会发生火星撞地球 什么是火星撞地球 What you believe.If the world betrayed you.I will stand behind you,betraying the world. 1.when do yu think__A___ start the new attack?A they will B will they C they can D can theyThere are some police cars in front.what do you suppose __A___?A is the matter B is happen C is the wrong D the trouble is以上两题,在我看来好像差不