托福阅读逻辑关系图画法.ppt

Sentence Simplification;一、What does Sentence Simplification ask you to do?;What is “the essential information”;1）考点是题目的主要逻辑关系（平行结构） If the pores are large, the water in them will exist as drops too heavy for surface tension to hold, and it will drain away; but if the pores are small enough, the water in them will exist as thin films, too light to overcome the force of surface tension holding them in place，then the water will be firmly held. ; ○Surface tension is not strong enough to retain drops of water in rocks with large pores but it strong enough to hold on to thin films of water in rocks with small pores. ○Water in rocks is held in place by large pores and drains away from small size pores through surface tension. ○Small pores and large pores both interact with surface tension to determine whether a rock will hold water as heavy drops or as a thin film.（没有逻辑关系词） ○If the force of surface tension is too weak to hold water in place as heavy drops, the water will continue to be held firmly in place as a thin film when large pores exist.;句子主干为考点的情况; ○Unchanging physical laws have limited the size and strength of buildings that can be made with materials discovered long ago. ○Building materials have changed in order to increase architectural size and strength, but physical laws of structure have not changed. ○When people first started to build, the structural methods used to provide strength and size were inadequate because they were not based on physical laws. ○Unlike building materials, the methods of support used in architecture have not changed over time because they are based on physical laws. ;逻辑关系图;;methods of support ;methods of support ;;Thank you