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It’s a fine Sunday morning. There are many people here. They are looking at Big Ben. Many of them are young and some are old. Two boys are playing with their yo-yos. A girl is flying a kite.
There is a lake here. Mary and I are drawing near the lake. I am drawing Big Ben. I want to give the picture to my mother as a gift.
1．It is a fine Saturday morning.2．Two boys are playing with a ball.
3．A girl is eating a banana.
4．I am drawing a picture of Big Ben.
5．The people are looking at Big Ben.
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
