he was forced to sign the document请问这里的不定式是作为主语补足语吗?

he was forced to sign the document请问这里的不定式是作为主语补足语吗? 请问convincing这里是名词性短语作为problem的宾语补足语吗? He was forced to leave his hometown 中文意思是? he went to the supermarket to buy some food 不定式充当主语的补语吗 1主语补语指在带宾语补足语的结构变成被动语态后,原来的宾补,如：　　a.He was made to study har He was found the right man for the job.首先看不懂,其后主语补足语在哪啊 初级英语,I is girl.这里的girl是主语补足语还是表语,为什么? To know everything is to know nothing 这里为什么是不定式的主语,everythin This is a good place to pratice to football..这里是不定式做主语后置吗? 英语语法问题prior to the war,he was a teacher请问这里的prior是形容词还是副词? 主语补足语!在线等!he was last seen playing near the river 问题一 这句话翻译过 如何区分主语补足语和to不定式做后置定语?