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express ______________ about something.
what we think
我们使用It is +adj.+to+infinitive这个结构
表达我们对事物的想法。
helpful
donate money to charities
plant more trees
important
necessary
keep the park clean
proper
take care of a lost pet
good
help blind people cross the road
right
give seats to the elderly
It is difficult for the blind to cross the road.
wonderful
donate blood to people in need
nice
help the child with homework
We use It is +adj.+for+sb+to+infinitive
to specify(指定) _____ we are talking about.
who
我们使用It is +adj.+for+sb+to+infinitive这个结构
指定我们讨论的人物。
It is difficult for poor children to go to school.
It is not easy for them to buy new clothes.
It is important for them to eat healthy food.
It is impossible for them