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Today is Sunday. On Sundays, I usually play the flute(笛子). My father usually reads newspaper. My mother usually cleans the house. But today my mother is in bed. She is ill. My father has to do the housework. Now, he is cleaning the house. “Sam, can you help me?” “Yes, Dad. ” Now, we’re washing the car. Where’s my sister, Amy? She is playing my flute. What a lucky girl!
1．My father usually plays the flute on Sundays.2．My father is cleaning the house now.
3．I’m helping my mother to wash the car.
4．Amy is playing my flute now.
5．My mother is ill in bed today.
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
