1)通常作复数的集体名词 1)双重否定最常见的形式有： no(not)...but...没有……不…… no(not)...without...没有……不，除……不 no(not)...unless没有……就不…… not...until直到……才…… 例如：There is no one but knows it.没有一个人不知道此事。 2)can not与副词too,enough, sufficiently, over, too much等词连用时，意为“无 论怎样也不过分”，“越…越”。例如： You cannot be too careful.你越仔细越好。 We cannot praise him too much.我们无论怎样赞扬他也不过分。 近义词辨析 break, crack, crush, shatter,break, smash 这组词均含有“打破”或“挤碎”的意思。
break 是这组词中最常用的，指使某件东西破碎。 If you break that vase, you’ll have to pay for it.如果打破了那只花瓶，你就 得赔偿。
crack 指打裂某物，但不一定打碎，因而通常不会成为碎片。 You may crack these nuts with a hammer.你可以用锤子把这些坚果敲开。
crush 强调挤压或踩的动作，毁坏程度取决于被压物的组织结构，或变形，或成小块，或可恢复原状。 To make wine, you first crush the grapes.若要造酒，需先将葡萄压碎。
shatter 打破某物，力大到使碎片飞出很远，常指整件东西完全被毁。 The explosion shattered most of the windows in the building.爆炸震碎了那座大楼的大部分窗玻璃。
smash 突出暴力，击打时动作较猛，被击打的东西往往完全报废。 He smashed the window with a brick.他用砖块击碎窗玻璃。
全真模拟试题 1. ____ native to North America, corn has now spread all over the world. A. In spite of B. That it is C. It was D. Although 2. Our civilization cannot be thought of as ____ in a short period of time. A. to have been created B. to be created C. having been created D. being created 3. We feel it is high time that the Government ____ something to check the inflation. A. did B. do C.should do D. would do 4. It has been proposed that we ____ our decision un til the next meeting. A.delayed B.delay C. can delay D. are to delay 5. Hurricanes are severe cyclones with winds over seventyfive miles an hour ____ originate over tropical ocean waters. A. which B. who C. where D.how to 6. ____ is announced in the papers, our country has launched a largescale move ment against smuggling and fraudulent activities in foreign currency exchange de als. A. What B. As C. Which D. That 7. All the flights ____ because of the snowstorm, we had to take the train instead. A.were canceled B. had been canceled C. having canceled D. having been canceled 8. Once ____, this power station will supply all the neighboring towns and villages with electricity. A. it being completed B. it completed C. completed D. it completes 9. He might have been killed ____ the timely arrival of the ambulance. A. but for B. except for C. besides D. except 10. If you have never planted anything, you won’t be able to know the ple asure of watching the thing you have planted ____. A.grow B. to grow C. growing D. to be growing