be动词过去式如何与动词使用 就是 当be动词在一个过去式的句子里 用了过去式 那么动词需要变过去式吗
be动词和动词连用后,它和动词看做一个整体。比如:be study,就算是一个动词了然后,be负责表现现在时、过去时、完成体、未完成体、人称、数等的工作,动词负责表现主动态/进行体、被动态等的工作。 比如:现在时:am/are/is studying/studied过去时:was/were studying/studied现在完成时:have/has been studying/studied过去完成时:had been studying/studied将来时:will be studying/studied过去将来时:would be studying/studied将来完成时:wil...全部
be动词和动词连用后,它和动词看做一个整体。比如:be study,就算是一个动词了然后,be负责表现现在时、过去时、完成体、未完成体、人称、数等的工作,动词负责表现主动态/进行体、被动态等的工作。
比如:现在时:am/are/is studying/studied过去时:was/were studying/studied现在完成时:have/has been studying/studied过去完成时:had been studying/studied将来时:will be studying/studied过去将来时:would be studying/studied将来完成时:will have been studying/studied过去将来完成时:would have been studying/studied这样在开头添加新的助动词。
而每次构成的新结构中第一个主动词负责时间变化,be在have的各种形式后一律变成been,have不打头阵时则保留原样have were,go。收起