因为这句话意思是一旦你已经。。。，表明动作已经完成，而且要对以后产生影响，用现在完成时来表示。满意请采纳，谢谢
Once you have done maintenance 青云英语翻译 请在下面的文本框内输入文字,然后点击开始翻译按钮进行翻译,如果您看不到结果,请重新翻译! 翻译结果1翻译结果2翻译结果3翻译结果4翻译结果5 翻译结果1复制译文编辑译文朗读译文返回顶部 一旦你这样做保养 翻译结果2复制译文编辑译文朗读译文返回顶部...
aunshrunk unshrunk[translate] aSorry I thought this is Line official account 抱歉的I认为这是线官员帐户[translate] aPlease inform us by email and provide the bank advice once you have done 一旦您做了,由电子邮件请通知我们并且提供银行忠告[translate]...
Once you have done that, you will need wooden boxes to keep the bees in. Wooden boxes are very 68 to the homes that bees make for themselves in trees. You will also need a jacket and a hat with a piece that covers your face to keep you safe while you are working with the bees. ...
pathize with them, enjoy wit
Once you've done the work, why not have someone else break the rules so you can learn from how to do it?Every time the rules first Qi Baishi was a talent Chinese artist, but he spent much time learn traditional drawing and painting skills before found his own style. Master them before...
Once you have done this, you will quickly become a useful member of the team . 一旦你做到了这一点.你将很快成为这一群体中有用的一员. [明晰]在once, if, when, unless, before等引导的条件.时间状语从句中. 常用一般现 在时代表将来时.但为了强调从句中动作的提前
这句话的意思是“一旦你读完一本书”，是很常见且正确的表达。例如：Once you're done eating, we ...
once引导的条件状语从句。例句：Once making a promise,you should try your best to fulfil it.译文：一旦做出承诺，你应该尽你最大的努力去实现它。三、词语结构不同 1.on doing 解析：on doing介词+动名词。2.once doing 解析：once doing连词once +加动名词。
once是引导从句，主要是看主句是表将来、现在。两个句子都是一样的意思。once其实是很简单的用法，这里你主要是看从句的谓语表示的意味。have done是指从过去到现在甚至到未来的影响作用，而第二句用一般现在时，主要是表现在的意思。