关于不定式用法The young man was seen ____ into a police car just a few minutes ago.这里的空不能用不定式的原因是?是不是时态的什么问题?什么时候的see sb do可以改成be seen to do?

关于不定式用法The young man was seen ____ into a police car just a few minutes ago.这里的空不能用不定式的原因是?是不是时态的什么问题?什么时候的see sb do可以改成be seen to do? the young man ------- 关于动词不定式的用法 关于downstairs的用法.我在网上看到downstairs作为形容词有两种用法：1.The young man downstairs is a lawyer.（后置）2.Your downstairs neighbor let me in.（前置）请问后置,这是什么用法? What was the young man? the young man后面是三单吗? How is the young man? 关于动词不定式的详细用法见上题 我知道standing是修饰the young man,但不知道在英语上具体叫啥用法,帮一我知道standing是修饰the young man,但不知道在英语上具体叫啥用法, The young man is behind the old man. 不定式用法 the man is young(否） what is the young man,怎么回答 I know the young man.否定句 ------How is the young man?-------________________ W____that young man in the photo? how is the young man同义句 they will never f____ the young man