1．
句型转换。
(1)There is a pen on the desk.（变为复数）
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(2)That boy is putting an egg on his head改为一般疑问句）
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(3) Helen usually draws pictures on Sunday.(划线部分提问）
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(4)Peter likes reading on Sunday.(改为否定句）
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(5)There are 20 teachers in my school. (划线部分提问）
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