为什么这个句子student要用复数?

为什么这个句子student要用复数? No students and no teacher is in the classroom now.这个句子谓语动词用单数对吗?还有为什么此句中student用的复数,而teacher用的单数? though it were ten thousand mile 这个句子为什么用复数were,mile为什么也用复数呢? though it were ten thousand mile 这个句子为什么用复数were,mile为什么不用复数呢? are you a teacher or student?我在新东方上看到这个句子 为什么teacher前面要加a 而student后面不用加呢? we compete with others这个句子的“other”为什么用复数形式作代词? 把下列句子变成复数形式.Is he a student? Many a student is going to visit the factory.帮我详细分析一下这个句子为什么用了 MANY还用a student?谓语动词为什么用单数,根据什么来确定的`? 最高级后的名词,什么时候用单数,什么时候用复数比如这个句子中,为什么seat用复数,It has the most comfortable seats. the加复数名词后面谓语动词用单数还是复数呢这个句子The scientists say they found several ancient stone tools.为什么不用says呢 A group of sheep are eating grass and leaves at the foot of the hill.这个句子中 grass为什么不用复数 而leaf用复数 为什么这个是复数形式呢 He likes reading news.He likes reading news.这个句子有两个问题1.为什么这个是复数形式呢2.为什么用进行时呢,他喜欢读报纸不一定正在进行的啊 All that glitters is not gold.这个句子 glitters 是复数,为什么不用are 而用is? people use chemicals too much in their fields关于这个句子,chemicals(化学品)不是复数吗?为什么用too m any other student表示的是复数,为什么student后不用加s? every student.是不是复数? What would you do if you wanted to be friends with a new student.friend为什么用复数呢? too many student waste time on tv too many students waste time on tv为什么第一个中 学生不用复数可数名词不是用复数形式吗