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－Where ________ the baseball?
－It ________ on the floor.
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A．is, are B．are, is C．is, is
分析：where表示“在哪里”，用来提问位置和处所。后面跟的是可数名词单数则用Where is…？提问；后面跟的是可数名词复数，则用Where are…？提问。
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同学们回想看看我们共学了哪些句型。本单元我们学习的是如何描述物体的位置。陈述句的格式为：sb. /sth.＋be(not)＋介词短语(方位)。如My book is(not)in my bag.我的书在/不在我的书包里。如果将这个句子改为一般疑问句就是将be动词提到句首，即为Is your book in your bag?寻问物体在哪儿要用到特殊疑问，结构为特殊疑问词where＋一般疑问句。如Where is your book?在这里提醒同学们注意的是主谓一致。还是这三个例子，如果要说明的不只一本书，而是几本书，它们分别为“My books are in the bag. Are your books in your bag? Where are my books?”
试一试：你能将方框内恰当的动词形式填入对话空白处吗？如果填对了，说明你掌握了主谓一致的基本原则，如果有错，不必着急，可以向你的老师或者同学请教。
am is are has have
I 1 John. I 2 a pen. It 3 on my desk. Tom is my friend. He 4 two pencils. They 5 in his pencil case. We are in the same(相同)school.
查看习题详情和答案>>根据下面一篇短文的内容判断所给句子的正误, 正确的用“A”表示，错误的用“B”表示。
This is a special class. The students come from different countries. Some come from America, others come from Canada, Japan,Australia and England. They speak different languages. But all of them can speak English. They're good friends. They study together,play together and live together. They help each other.
All the teachers of this class are Chinese, but they can speak English. They teach their students in English. They're very kind and friendly. They work hard. The students in this class study Chinese cooking and Chinese kongfu. All the students like China. They say China is a great country and the Chinese are friendly, and they're happy in China.
【小题1】The students all come from England.
【小题2】All of them speak the same language.
【小题3】The teachers of this class teach their students in English.
【小题4】The students in this class only study Chinese cooking.
【小题5】The teachers of this class can speak Chinese and English.