Lesson 20：Look at them!（看看他们/它们！）

一只鞋和一双鞋

①：shoe（一只鞋）；

②：shoes（一双鞋）。

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单词

/bɪɡ/
big  adj.大的

/smɔːl/
small  adj.小的

/ˈəʊpən/
open  adj.打开，开着的

/ʃʌt/
shut  adj.关闭着的
补充：closed（/kləʊzd/，关闭的，此说法更加常用）

/laɪt/
light  adj.轻的

/ˈhevi/
heavy  adj.重的

/ʃuː/
shoe  n.(一只)鞋子
补充：shoes（/ʃuːz/，[一双]鞋子，此说法更加常用）

/ˈɡrænfɑːðə(r)/
grandfather  n.祖父，外祖父

/ˈɡrænmʌðə(r)/
grandmother  n.祖母，外祖母

语法练习

一：仿照例句用所给的词进行造句
例：we/cold/hot
- We're cold. We aren't hot.

①：they/short/tall
- They're short. They aren't tall.
②：those doors/shut/open
- Those doors are shut. Those aren't open.
③：these boxes/heavy/light
- These boxes are heavy. These aren't light.
④：my skirts/long/short
- My skirts are long. They aren't short.

二：仿照例句将下列句子改为复数形式
例：My books is heavy. -- My books are heavy.

①：Your student is hard-working. -- Your students are hard-working.
②：This air hostess is busy. -- These air hostesses are busy.
③：That tourist is thirsty. -- Those tourists are thirsty.
④：His child's hand is clean. -- His children's hands are clean.
⑤：He's tall. -- They're tall.
⑥：This old housewife is tired. -- These old housewives are tired.