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Fifteen years ago, Mr Chen was a student. He studied hard at English, and studied well. He walked to school. He had lunch at school. He was a good student.
Now, Mr Chen is an English teacher. He goes to school by car. He also teaches us some English songs. We all like him. He tells us, “Where there is a will, there is a way.” Being an English teacher is his dream, and now his dream comes true.
1．Fifteen years ago, Mr Chen was a teacher.2．He was good at English then.
3．Now, he goes to school by bus.
4．We all like him very much.
5．Being a Chinese teacher is his dream.
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
