the doctor and teacher____(be)invited to give the lecture.
the doctor and the teacher_____(be)invited to give the lecture
the doctor and teacher____(be)invited to give the lecture.
the doctor and the teacher_____(be)invited to give the lecture
填was the doctor and teacher是同一个人,谓语故用单数.
填were the doctor and the teacher是两个不同的人,谓语故用复数
is;are
第一个doctor和teacher指一个人,也就是兼职 故用is
第二个是两个人啦,名词前都有the 用are
was/is
were/are
is
are
前面讲的是一个人,这个人即使医生又是老师
is
are
was were
这是由and连接的联合结构做主语的问题。这样记住就可以了: 注意冠词的作用,and后面那个名词没有冠词,则谓语用单数,反之用复数。 也就是说,and后面那个名词没有冠词,则and连接的两个名词是指同一个人或事,谓语用单数;反之,指不同的人或事,谓语用复数。