英语提问20Historically,mainmaterialformakingtableshasbeenwood,butmetalandstonehavealsobeenused.a.the;/b./;/c.the;thed./;the请选择.为什么第二个空不用冠词?

Question

英语提问20
Historically,______ main material for making tables has been wood,but______ metal and stone have also been used.
a.the;/
b./;/
c.the;the
d./;the
请选择.为什么第二个空不用冠词?

Answer 1

选a.因为metal和stone在这里泛指”铁”和”石头”两种物质．而不是特指,所以不用the.英语中泛指时不用the,这是the的一个用法．