写出下列单词的复数形式：15%
（1）dog
（2）puppy
（3）lion
（4）baby
（5）cat
（6）piglet
（7）horse
（8）calf
（9）goose
（10）joey
（11）duckling
（12）hen
（13）mouse
（14）child
（15）knife
写出下列各词的比较级。
strong________ thin________ short________
heavy_________high________ well_________
看图，补全对话。
A: Mum, shall we go ____________ this afternoon?
B: Why?
A:My sweater is too _____________.
I’d like a ____________ one.
看图，补全对话。
A: May I use your ruler? My ruler is too ___________ .
B: Yes. My ruler is __________ than __________. Here you are.
选词填空。
（1） The pumpkin is ___________ than the apple. ( heavy, heavier )
（2） Jim is 150cm. Ben is 155cm. So Ben is 5cm ____________ than Jim. (tall, taller )
（3） I’m as ____________ as my brother(short, shorter). But he’s __________than me. (fat, fatter )
（4） My birthday’s ______________ the 3rd of December. (in, on )
Is your birthday ____________ December, too ? (in, on )
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