1. Please come at about half past six.
=Come at about six thirty, please.
2. What time shall I come?
=When shall I come?
3. What a hard-working boy!
=How hard-working the boy is!
4. Granny, the hospital isn't very near.
=Granny, the hospital is far away.
5. My parents will take the plane to Beijing next month.
=My parents will fly to Beijing next month.
=My parents will go to Beijing by plane/air.
6. He didn't come to shool, because he is ill today.
=He is ill today, so he didn't come to school.
=He didn't come to school because of his illness/sickness today.
7. I want to do some sightseeing this summer.
=I want to go sightseeing this summer.
=I would like to take a trip this summer.
8. What's your job?
=What do you do?
=What are you?
参考资料:原创回答团(159号会员)