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A. My son wanted to have some candies, so I gave him five yuan. Then he went out and he didn’t come home.
B. We were in a park. There were so many people. Maybe my son saw something interesting, and he just went away.
C. My son went to the toilet. I was thirsty and I went to buy some water, but I couldn’t find my way back.
1．My mum gave me some money. I went to the shop and bought some candies. （
2．I went to the toilet. When I came out, I couldn’t find my mother. She is very old. So I’m really worried. （
3．I saw a clown. He was so funny, so I went to him and played with him. There were so many people and I couldn’t find my mum. （
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
