it will not be long before that young man___me again.

第一题：C 根据句意,过不了多久,那个年轻人又会遇到我,表示将来遇到我,因为是从句,
所以用一般现在时表示将来.而 D 是过去将来时,客观要求主句是过去时的某种时态.
第二题：C 据题,翻译成：我认为,他真的不知道他在说什么.表示正在,be+doing
选 c .而D 是被动语态,译为,有人说他,题译成：我认为,他真的不知道别人说他
什么.又因为 D 是过去时,与主体时态不符.
举过去将来时例子：1.Yesterday,he said he would visit Beijing the next year.
2.the last winter before,they just began their work,because there
would be a game in their city.
3.He would visit a museum before he saw his father.

1. 主将从现

2. be+过去分词表示被动

   例如：He said he would be a president in the future.

过去进行时公式；was/were+doing 第一个是将来时，用will