be to do也有这样的意思：表示可能性, 相当于can, may 如: Such books are to be found in the library. 这样的书在图书馆里就能找到。 Not a single sound was to be heard. 一点儿声音也听不到。 Not a soul was to be seen. 看不到一个人影。 She was nowhere to be found. 哪儿也找不到她。所以这里解释为如果我能再年轻一次更好些。...
这是虚拟语气，这种情况是对将来的虚拟。句型对照：1.If sb were……（in the future-有明确的将来时间），sb would do sth2.If sb did ……（in the future-有明确的将来时间），sb would do sth3.If sb were to do sth，sb would do sth...
