it is five years since we began learing English 为什么不是it was

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• 求高一英语短文改错高手每篇10处错误,一共2篇,就是20处错误第一篇：It is almost five years since I begin to learn English.I'm glad to say I'm getting along good with it.But first I came across a lot of difficulties.I couldn't pronounce English words we'll,so could I remember the words I had learned.In class ,I couldn't understand that the teacher had said.I amlost lost heart when the teacher told me,"Keeping on,and you'll do we'll ,"I was great encourage.i started working hard at En
• (it is ） four years since we last saw each other.这句话括号里为什么不是there were
• 1.Mr.Smith has _____ a bank clerk for five years.A.be B.got C.become D.been 2.I think the best way _____ learn English is to use it as often as possible.A.for B .of C.on D .to 3.They have been friends ______ they met at schoolA.when B.until C.since D.before 4.我已经决定要离开了.I have _____ _____ leave.最好说下理由,为什么是这个
• 英语翻译We have learned English for two years.（改为同义句）Two years ____ _____ since we began to learn English.
• It ()five years()i began to study English答案是is before 想知道为什么
• They needed money to f___the children.填词I have lived here since I was five years old.It has been seventy years a___.My parents had eight children,They needed money to f___the children so they sold me to a_____ family when I was five.Then I began to live in Tai he Village w____ them.I have not studied at a school b_____ I started working when I was sixteen.Then I got m____ when I was eighteen.My husband was thirty years old when we got married.His fami
• 英语根据词的类型填空 麻烦各位英语爱后者帮忙解决一下下面的几道题 解释一下为什么这么填 谢谢了!1.The medical team_____(comprise) five doctors and two nurses.2.Glaciers(冰川）are a possible source of fresh water that _____(overlook)for years.3.I am _____(please) surprised that there is so much information available.4.We knew from the news report that it _____(snow) in the north since the day before yesterday.
• we began to learn english three years ago 同义句____ ____ _____ ____ since we began to learn english.
• since three years ago 句子要用在 现在完成里吗?We __B__ english since three years ago.A.learned B.have learned Tom has been in Paris since 2 years agoI have been here since five months ago.问：1.since+时间+ago 在句子里怎么翻译,表示：已经多少年了,还是表示 自从多少年前?2.这种句型都用在现在完成时吗?
• It will be five years since we meet again.为什么用will be 还有when?
• 下列五种溶液：①NaOH溶液、②Ba（OH）2溶液、③Na2SO4溶液、④稀硝酸、⑤混有少量硝酸的MgSO4溶液．（1）指出其中属于碱溶液的是______（选填序号）；（2）若将Ba（OH）2溶液逐滴加入到混有少量硝酸的MgSO4溶液中，所得沉淀的质量与加入的Ba（OH）2的质量变化符合下列图象的是______（选填序号）．
• 有四种物质的溶液 1 Ba(OH)2 2 Na2SO4 3 HNO3 4 FeCL3不用其他试剂就可将它们一一鉴别出来 其鉴别顺序为?为什么?