雅思作文之如何確保雅思寫作中心思想的統(tǒng)一性

　　請看下例：

　　Joe and I decided to take the long trip we'd always wanted across the country. We were like young kids buying our camper and stocking it with all the necessities of life. Bella bakes the best rhubarb pie. We started out in early spring from Minneapolis and headed west across the northern part of the country. We both enjoyed those people we met at the trailer park. Joe received a watch at his retirement dinner. To our surprise, we found that we liked the warm southern regions very much, and so we decided to stay here in New Mexico.

　　本段的主題句是段首句，controlling idea(中心思想)是take the long trip across the country。文中出現(xiàn)兩個irrelevant sentences，一個是Bella bakes the best rhubarb pie，這一段是講的是Joe and I，中間出現(xiàn)一個Bella是不合適的。還有，Joe received a watch at his retirement dinner這一句更是與主題句不相關(guān)?？忌谧魑木砩铣３Ｒ?yàn)樵斐鰅rrelevant sentences(不相關(guān)語句)而丟分，值得引起注意。再看一個例子：

　　My name is Roseanna, and I like to keep physically fit. I used to weigh two hundred pounds, but I joined the YMCA for an exercise class and diet program. In one year I lost eighty pounds. I feel much better and never want to have that much weight on my five-feet frame again. I bought two new suitcases last week. Everyday I practice jogging three miles, swimming fifteen laps, lifting twenty-pound weights and playing tennis for one hour. My mother was a premature baby.

　　本段的controlling idea是like to deep physically fit，但段中有兩個irrelevant sentences，一個是I bought two new suitcases last week，另一個是My mother was a premature baby。

　　從上面兩個例子可以看出，native speakers同樣會造出來irrelevant sentences。卷面上如果這種句子多了，造成偏題或離題，那問題就更嚴(yán)重了。