for/without等构成的介词短语作为暗示条件句，相当于if引导的虚拟条件从句。
⒉You didn’t let me help. If we_____________together, you _____so tired.
A. worked; didn’t get
B. worked; wouldn’t get
C. were working; wouldn’t get
D. had worked; wouldn’t have got
答案与解析：D。本题考查条件句中虚拟语气的用法。题干didn’t let表明该题说的是过去的事情，与过去事实相反的假设，虚拟语气的从句用“had+过去分词”，主句用“would have+过去分词”的结构。
⒊If you _____tomorrow, you _____find the new manager working in the office.
A.should come; would
B.would come; would
C.will come; should
D.comes; might
答案与解析：A。与将来事实相反时，条件句中的谓语形式有3种：动词的过去式，should+动词原形，were ti +动词原形。
