主将从现 (21次)
“将”：主句可以用一般将来时、祈使句、情态动词+ do
“现”：从句可以用一般现在、现在完成时(初中不考，高考必考)
“连接词”：if、as soon as、when(until、unless、before、the moment、the minute)
1.-- Have you returned the book? --Not yet. Don't worry. I it when I finish it.
A. return B. returned C. will return D. have returned
2. ---Don't you know when Mr. Green ______ to our party this evening?
---No, but I think he ______ when he is free.
A. will come; come B. will come; will come
C. come; comes D. comes; comes
