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How old is Ben?
Let’s sing!
Number Song
This is for you.
Four little cars！
Thank you!
This is for you.
Three dogs! Thank you!
This is for you.
Five balls! Thank you!
This is for you.
Six books! Thank you!
This is for you.
Ten crayons!
Thank you!
名词复数：
1 直接在名词后加s
2 复数名词后是s/x结尾，加es
3 不规则变化的名词复数
two pencils
one pencil
seven erasers
nine rulers
six pencil-boxes
eight buses
Let's chant
How are you?
I'm fine.
How old are you?
I'm nine.