英语速学增添词缀

增添词缀：

增加词缀是给特征形容词加上前缀（prefix）或后缀 （suffix），使之变成特征型使动词。重要前缀有en- ， ，主要 后缀有-en，-fy，-ize， ，-itate的英语速学知识点，例如：

178） a．He enriched the soil． 

b．He made the soil rich／richer． c．The soil was enriched．

e．The soil became rich／richer． CopyRight .com

（他使泥土肥沃。／土壤变得肥饶了。）

179） a．He enlarged the photo．

b．He made the photo larger．

c．The photo was enlarged． CopyRight .com

d．The photo was made larger．

e．The photo became larger．

（他把照片放大了。／照片放大了。）

180） a．He sharpened the knife．

b．He made the knife sharp．

c．The knife was sharpened． 

d．The knife was made sharp． 内容来自

e．The knife became sharp． 

（他把刀磨快了。／刀磨快了。）

181）英语速学例句 a．They widened the road． 内容来自

b．They made the road wider． 

c．The road was widened． CopyRight .com

d．The road was made wider．

e．The road became wider．

（他们把路加宽了。／路加宽了。） 

182） a．They purified the water．

b．They made the water pure．

c．The water was purified．

d．The water was made pure．

e．The water became pure．

（他们把水污染了。／水传染了。） CopyRight .com

183）a．They fertilized the land．

b．They made the land fertile． 

c．The land was fertilized．

d．The land was made fertile．

e．The land became fertile．

（他们给地施肥。／土地肥沃了。）

184） a．They modernized their equipment．

b．They made their equipment modern． 

c．Their equipment was modernized．

d．Their equipment was made modern． 

e．Their equipment became modern．

（他们把设备古代化了。／他们的装备更新了。）

185） a．Modern inventions have facilitated house- work．

b．Modern inventions have made house-work facile／easy．

c．Modern inventions have made it easy to do housework．

（古代的发明发现使得家务劳动变得容易了。）

186） a．The increase in population necessitates a greater food supply． CopyRight .com

b．The increase in population makes a greater food supply necessary． 内容来自

c．The increase in population makes it necessary to supply more food． CopyRight .com

（人口的增长使食物的供应也要增添。） 

187） a．The economic conditions necessitate the construction of very high buildings on narrow lots．

b．The economic conditions make necessary the construction of very high buildings on narrow lots．

c．The economic conditions make it necessary to construct very high buildings on narrow lots． 内容来自

（这种经济状况使得有必要在狭窄的土地上建造非常高的建造物。）

有些存在特点性的名词加上后缀-en，也可能变为 特色型使动词，例如：

188） a．He lengthened the line． 

b．He made the line longer．

c．The line was lengthened． CopyRight .com

d．The line was made longer．

e．The line became longer．

（他延伸了这条线。／这条线延长了。）

189） a．The people in the town strengthened their defenses．

b．The people in the town made their defenses stronger． 内容来自

c．The defenses in the town were strengthened．

d．The defenses in the town were made stronger．

e．The defenses in the town became stronger．

（这城镇里的人加强了他们的防范工事。／这城镇的戒备工事增强了的英语速学知识点。）