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| Who | In the past | Now | Hopes for the future |
 A writer Mr Zhang | ◎ sat for a long time ◎ did not do any exercises | ◎ plays table tennis with his friends ◎ walks or rides his bike | ◎ will be healthier |
 A student Peter | ◎climbed mountains ◎went fishing | ◎ goes to the theatre ◎ takes photos | ◎ will become a photographer |
 A housewife Mrs Wang | ◎ swept the floor with a broom ◎ washed clothes by hand | ◎ uses a vacuum cleaner and a washing machine | ◎will have robots do the housework |
1．Mr Zhang did exercises a lot and he often played table tennis with his friends in the past.
2．Peter will become a writer in the future because he likes writing.
3．Mrs Wang would like to have robots do the housework in the future.
4．Mr Zhang and Peter can talk on the topic of how to be healthier.
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
