国产精品一卡,国产精品久久久免费,91久久国产,国产欧美日韩一区二区三区在线

　　托福閱讀如何做修辭目的題呢？技巧一：牢記作者目的經典位置

　　我們知道常見的段落結構有總分、分總和總分總，而在托福閱讀中先總后分的結構比較受偏愛。

　　所以通常情況下作者目的往往出現在所提及信息的前面，可能是比較直接的前一句，也可能是整段的中心句，放在段首部分，需要具體情況具體分析，我們可以結合下面的例子來理解。

　　例題一：

　　Magnification, the increase in the apparent size of an object, is one important factor in microscopy. Also important is resolving power, a measure of the clarity of an image. Resolving power is the ability of an optical instrument to show two objects as separate. For example, what looks to the unaided eye like a single star in the sky may be resolved as two stars with the help of a telescope. Any optical device is limited by its resolving power. The light microscope cannot resolve detail finer than 0.2 micrometers, about the size of the smallest bacterium; consequently, no matter how many times its image of such a bacterium is magnified, the light microscope cannot show the details of the cell's internal structure.

　　2.Why does the author mention "a telescope" as part of the discussion of microscopes?

　　A. To show how microscopes and telescopes are different.

　　B. To emphasize the importance of magnification in all optical devices.

　　C. To explain how the development of the microscope depended on the invention of the telescope.

　　D. To illustrate the concept of resolving power.

　　這道題就屬于作者目的在定位句前一句或者說前兩句的情況。我們可以看到，包含“a telescope”的定位句以for example開頭，明顯是一個例子。

　　通常情況下，例子要論證的對象會放在例子的前面。不管是例子里面還是例子前面兩句，都出現了resolve這個詞，說明它們在論述一個point，是一個意群。

　　而段落的開頭句講到的是magnification，則是一個和例子無關的東西。所以，作者舉出telescope的例子是為了讓我們更容易理解resolving power這個概念。

　　小編整理了3個技巧，更多技巧點擊下一篇查看！培頓 教育開設托福備考課堂，提升托福成績，在線咨詢可預約免費試聽課！