[新知导引]
诵读下列例句并感知画线部分的共性
1．(教材P50)There were deep cracks that/which appeared in the well walls.
2．(教材P50)Two thirds of the people who lived there were dead or injured.
3．(教材P50)The number of people who were killed or badly injured in the quake was more than 400,000.
4．(教材P50)Soon after the quakes, the army sent 150,000 soldiers to Tangshan to dig out those who were trapped and to bury the dead.
5．(教材P50)Workers built shelters for survivors whose homes had been destroyed.
6．(教材P52) A doctor with whom James used to work died in the 2016 earthquake in Ecuador.
7．The boy whose father is a teacher is a new classmate of mine.
8. China is a country that/which has a long history.
