The green consumer教案
occur 發(fā)生
how did the accident occur?
occur 出現(xiàn)
the sound doesn’t occur in his native language so it is difficult for him to pronounce.
occur, take place, happen
the unexpected thing always happens.
when will the football match take place?
7. it forms an essential protective layer around the earth.
protective adj. 保護性的
protect v. 保護
protection n.保護
8. destruction of the rain forests
destruction n.破壞
destruction of ……的破壞
destroy v. 破壞
the city was destroyed during the war.