two students played the pipa为什么不用加s

~ 因为
pipa没有复数形式，不加s也不加es。pipa在英语语境中表达的意思是琵琶，它是一个不可数名词，作为不可数名词，它既不能用不定冠词来修饰，而且单复数同源，即使表达复数的意思时也无需改变词形。举例来说，他懂得如何弹琵琶，翻译过来就是He knows how to play the pipa。由此可见，pipa的复数形式还是pipa，不加s也不加es。

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石嘴山市18513309841： the students aren't play football now 这句话对吗? - ？
白厚利喜： 这个句子有语法错误,可以将play改成playing.be动词后面不能接动词原形,所以这里不能使用play,从now这个词可以看出句子应当使用现在进行时,所以play要改为现在分词形式.

石嘴山市18513309841： will,boy,two,play,students , and,this,girl,two,g - ？
白厚利喜： Two boy students and two girl students will play this game.

石嘴山市18513309841： 急求人教版八年级英语上册Unit 4 How do you get to school? 教案 - ？
白厚利喜： Unit 4 How do you get to school? Teaching goals : 1. Words & phrases: get to , how far , bicycle , subway , minute , mile , bus stop . 2. Talk about how to get to places (谈论出行方式) take the bus /subway /train /taxi , ride a bike /walk . 3. how引导的...

石嘴山市18513309841： 英语翻译:那时二班的学生没在操场上踢足球,他们在打篮球. - ？
白厚利喜： Then the students of class two did not play football in the playground, they are playing basketball.

石嘴山市18513309841： The two students spent two hours playing football 的同意句是什么？
白厚利喜： 是it takes the 2 students 2 hours to play football.

石嘴山市18513309841： 大学英语,急!16.There are two - _____ - students on the play ground.A. hundredB. hundred of C. hundredsD. hundreds of17.There is - _____ - ink in the ... - ？
白厚利喜：[答案] 16 A 17 A 18 C 19 C 20 D 21 C 22 D 23 C 24 D 25 C 26 D 27 D 28 A 29 A 30 B 充其量就是点高中题,还大学英语?!

石嘴山市18513309841： Why should students play sports? Some people think that students play sports in order to get exercise. Others think it can help students have fun. But that is not ... - ？
白厚利喜：[答案] 1.play2.get3.reasons4.better5.remember6.successful7.skills8.improve9.communicate10.go

石嘴山市18513309841： 我想请两个同学到台上来 这句话用英语怎么说 - ？
白厚利喜： I'd like to ask two students to come here. 其实说法很多种,随便选一种就好了.

石嘴山市18513309841： The students (play) two days ago My mother (beat) me last month. - ？
白厚利喜： played....beat two days ago, last month为一般过去时的标记,beat的过去式还是beat.

石嘴山市18513309841： 英文翻译 当你看见他们的时候他们在干什么? 他们在打扫教室 那时二班的学生没在操场上踢足球,他们在打篮 - ？
白厚利喜： What were they doing when you saw them? They were cleaning classroom Students from class 2 were not playing football on ground at that time, they were playing basketball.