并列谓语的问题he is working and __drinking横线上要加is 能和我讲义下并列谓语的时态是怎么规定的吗如果前面是have 呢再问你一个i am sorry to do it 中to do it 做什么语

并列谓语的问题he is working and __drinking横线上要加is 能和我讲义下并列谓语的时态是怎么规定的吗如果前面是have 呢再问你一个i am sorry to do it 中to do it 做什么语 关于谓语的问题He is selling computersselling是谓语,那么is也是谓语吗 He is working hard是不是一个完整的句子,有人说没有谓语.is working hard不是系表结构么,可以做谓语 He is working as a worker这里的谓语是is working as 吗 是不是is是助动词 working是实义动词 as是介词因为有一个宾语 所以要加介词 对吗 英语加减法问题什么是两数相加用并列形式谓语动词用is,are都行 关于英语语法的问题 He is a teacher . 这里的is是不是谓语? He is working hard.是主谓宾结构吗?谓语和宾语分别是什么? 否定句中并列谓语的问题英语好的请答,并详细讲讲, He is working hard people 对working 主谓一致问题No visitor or relative can enter the patient's room unless ____ by the doctor.这里根据or连接两个并列主语的谓语动词就近原则,应填he is invited.但为什么不能填being invited? and 连接的并列句 句子时态是否要保持一致 为什么he is working for a big firm and he has already visited a great number of diferent place in Australia不是 有种说法吗 AND 连接的并列句 时态保持一致吗 or引导并列主语谓语的用法or引导并列主语,谓语是就近一致原则吗?应该如何决定是不是第三人称单数?如:He or your brothers go there.还是He or your brothers goes there? He is more hard-working than me.的同义句 and连接两个并列主语 谓语用什么He and I谓语应该用什么 非谓语和并列谓语 关于非谓语形式的问题having worked here for three years,he knows well about the factory.能不能改成working here for three years?是不是有for+时间的时候一定要用having done,而不能用doing? 一些关于 并列连词 的英语问题：1：并列连词常有哪些?有for没? 2：这个句子里,这样写是对的：He is absent today for he is ill. 那我改一下,但还用for连接,还对吗? 改后句：He is absent He spent a lot of time working for human rights and progress这里的working是非谓语,作什么成分?为什么不用to work?