were后动词是否要用ing:是they were have还是having?
were后动词是否要用ing:是they were have还是having?
was\were后是否加动词ing
因为have a good time后动词要加ing那么having a good后动词还需加ing吗?
have interest in后,动词是原型还是ing?
英语简单的语法When +v.(过去式),后面的句子动词应该用?was/were v.ing 还是v.过去式?
as if 后的BE动词是接were还是只是过去式
是having happy they are 还是have happy they are
did,was,were后接的动词用过去式还是用原型?
一般过去时was were后加ing么?
they were 后面的动词要不要加第三单数
They were of an age.动词为什么用过去时?
they were ( )because they didn 't have