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单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,Unit 6,bird,bird,s,单数,复数,在英语中,单数变复数,最常见的是加“,s,”,但也有很多特殊变形,比如本单元中的“,sheep,”,单复数同形式。类似这类变形的还有“,fish,”。,bird,s,chicken,s,donkey,s,duck,s,farm,s,goat,s,lamb,s,horse,s,你能举例吗?,你还记得英语中的四大句型吗?,陈述句,一般疑问句,否定句,特殊疑问句,This is a duck.,This isnt a duck.,Is this a duck?,Whats this?,That is a horse.,That isnt a horse.,Is that a horse?,Whats that?,This is a duck.,These,are,duck,s,.,That is a horse.,Those,are,horse,s,.,一般疑问句,否定句,特殊疑问句,cow,bull,
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