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The camera is cheaper.
The computer screen is smaller.
Mother’s skirt is longer.
Sister’s hair is shorter.
How to form the comparative of adjectives
Rule 1: 大多数单音节词，直接加-er
Brother is fatter.
Brother’s T-shirt is bigger.
Sister is thinner.
How to form the comparative of adjectives
Rule 2: 以一个辅音字母结尾的重读闭音节词，先双写这个辅音字母，再加-er
Phone World
A month ago
I’d like a phone with a wide screen.
Height:5.44 inches Height:6.22 inches
Width:2.64 inches Width:3.06 inches
Weight: 4.55 ounces Weight:6.07 ounces
iphone6
iphone6 Plus
Rule 3: 以-e结尾的词，直接加-r
iphone6
iphone6 Plus
Height:5.44 inches Height:6.22 inches
Width:2.64 inches Width:3.06 inches
Weight: 4.55 ounces Weight:6.07 ounces
iphone6
iphone6 Plus
I’m happier because my sister is happy.
Rule 4:
以“辅音字母+y”结尾的词，变y为i，再加-er