Grammar 答案：一、1. in celebration of 2. log off 3. some day 4. cultural differences 5. participate in 6. adjust to sth 7. when it comes to this topic 8. take up 9. give presents to sb 10. shake hands(with sb)二、时间If 条件句（谓语动词形式）主句（谓语动词形式）现在过去式/be(were)would/should…do1. were , would work; 2. had, would want3.If my bother were here, everything would go well.4. C三、时间If 条件句（谓语动词形式）主句（谓语动词形式）过去had doneWould/should…have done1. had been, would have passed; 2. had met, would have gone3. If you had come earlier, you would have met him.4. BDA四、时间If 条件句（谓语动词形式）主句（谓语动词形式）将来过去式/should do/were to doWould/should do1.happened/should happen/ were to happen, would get up2.controlled/should control/ were to control, would be3.If it were Sunday tomorrow, I would go to visit my grandmother.4.B 五、DBAC当堂检测：时间If 条件句（谓语动词形式）主句（谓语动词形式）现在过去式/be(were)would/should…do过去had doneWould/should…have done将来过去式/should do/were to doWould/should do省略 if把 had、were、should 等提到句首，用倒装语序CBCBD BCACD D
