句子：If you are interested in finding an article about computers,a university library would all kinds of articles than a public library.为什么这个句子里从句用的是一般现在时,主句却要用一般过去将来时?（全篇文章时

If YOU Are The if you are happy if you are If you are造句, If You Are...歌词 if you are wearing If you are 用以下几个英文单词组成句子you,have,are,grandchildren,grandparents,you ,if ,means that 根据汉语提示完成句子.if you are lost,you had better ( )the police( ） （请求. if you are doing your best,you will not have to worry about failure句子分析 You may keep out of trouble .you are careful enough. 用if写句子 if so和if not的区别这样一个句子：You are not happy.If not,I can make you happy.这里的if not表示if you are not happy,当句子改为 You have some problems and you are not happy.If I can make you happy.这里的if后面应该填so还 求英语句子翻译 If you are not busy being born, You are busy dying 是什么意思呀? 请帮我分析这几个句子“if you are not moving ahead,you are falling behind” If you are part of the group which you are addressing,的句子成份是什么?addressing怎么翻译? If you are the one if you are the one If You Are Happy 歌词