请帮我区分一下这三个句子I have been writing an article.I have written an article.I wrote an article.重点区分后两个

请帮我区分一下这三个句子I have been writing an article.I have written an article.I wrote an article.重点区分后两个 duty charges ax/tariff这三个单词都有税的意思,能不能帮我区分一下,I mix it i,not you,_in the wrong.Not i but he_been invited.a.were,have,b.were,has c.was has d.was have 为什么 并翻译句子请帮我翻译一下句子谢谢 请帮我看一下这句子有没有语法错误I have just seen your advertisement which wanted for a local tour guide. 请英语高手帮我区分下以下俩句话:I have a lack of money.和 I lack money. 请帮我区分“的”“地”“得”这三个字.回答简练一些. yet放在句子哪里?放在句中可以吗?还有一个问题,请帮我找一下错误：I have yet finished my work so far. I have revised the attachment which is accroding to your request.请帮我拆分并讲解一下句子结构与成份 请大神帮我分析一下下面句子的结构,就是分析主谓宾,定状补成分I have decided to place an order of some books . 请帮我连一下句子! 请帮我联一下句子, 请帮我改写一下句子, 请帮我讲解一下这个句子Excuse me, he said,with more dignity than I would have thought possible considering his appearancei would have thought possible considering his appearance能不能给我讲一下这里的语法 请大家 帮我翻译一下i'm happy to have known yous 是什么意思? Hi,Chen jie.I have a new schooIbog请帮我翻译一下 请帮我分析一下这句句子的句子成分I took some books out of my school bag. 请帮我解析一下It is to have better looking teeth.have better 这个句子请帮我解析一下这个句子It is to have better looking teeth.have better 后面为什么用动词ing形式 what is your sister and you doing?What is your sister and you doing?My sister and I am watching TVDid you have sisters or brothers?Yes,I have句子是否正确,如有错误请帮我改一下