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Time：Saturday
Place：the living room
People：Amy
Doing：writing a letter
Time：Saturday
Place：the living room
People：Amy
Doing：writing a letter
范例：It's Saturday morning. Amy's family are in the living room. What is Amy doing? She is writing a letter. She is sitting at the table. She wants to write a letter to her friend.
Time：Sunday
Place：the living room
People：Susan
Doin9：reading a newspaper, sitting in a chair
Time：Sunday
Place：the living room
People：Susan
Doin9：reading a newspaper, sitting in a chair
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同类型试题
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
