下面有些英语句子, by the end of the century sea levels will rise between two and four metres.( 句中为什么使用levels 复数形式?) tonnes 与 tons 有什么区别? 3 公斤面包,用英语怎么表达? 要加 of why?为什么我看到

下面有些英语句子, by the end of the century sea levels will rise between two and four metres.( 句中为什么使用levels 复数形式?) tonnes 与 tons 有什么区别? 3 公斤面包,用英语怎么表达? 要加 of why?为什么我看到 英语 为什么 下面句子中 be paid by countertrade 中间加with in fact,both india and china have made billion-dollar government purchasing lists,for most of the goods to be paid with by countertrade. 帮忙看看下面的英语句子The moon is our nearest neighbour in space,and like ourselves it is kept tied to the earth by the earth's gravitational pull.请问kept tied to the earth 英语——将下面句子合并为一句They tried to work out the difficult problem by thenselves.They asked the teacher.要用连接词.不能改变句意 请帮忙翻译一下下面的句子!speed up input stages by tapping the wider voltage swing at the output. 请教这句英语句子如何翻译,The army retreated by ordinance of the general. 为什么有些英语句子要加but 英语句子里面的一个短语里的介词Food safety should be paid great attention to by the government.在这句话里,attention后面的to可以省去吗?to和by连起来总觉得有些变扭 用英语解释下面句子3 multiplied by 9 equals 27.it takes danny about 20 minutes to get to schooldon't make a noise in the librarywhat was wrong?.我很赶时间啊...) 英语高手帮忙分析下下面一个句子的语法成分1.he traveled across China to document the words used by Chinese to describe their daily lives.(两个to 后面是什么成分?) 请问下面的英语句子中,为什么要用is,而后面的play又要加ed呢?这到底是什么时态?They say the heroine is played by Jane Fonda. by the time的用法.有2个问题.by the time 可以用在表示将来的句子中吗?我看有些回答说的都是表示过去.所以我有点不太确定.然后,by the time 后面必须接从句吗?例如,by the time,i will seek you.如果句子 take the bus,by bus有什么区别'在句子中的位置,英语,需要自己写! The girl agreed with what i said by smiling 用英语解释句子 When the words I love you were said by you.在网上查的英语句子 英语I am standing by the window.I can see my house（合合并句子 英语句子改错（每句一处）the boy was made cry by his sister 用英语解释句子; he called out to the man who passed by.