導語：在雅思小作文寫作的過程中準確的表達變化是非常重要的一個專案，YJBYS小編建議大家在備考中可以組合一些簡單句來進行，這樣可以減輕備考的負擔，也可以在考試中有更好的發揮。那麼我們可以應用哪些簡單句呢?
此結構是描寫資料動態變化的首選句型結構，需注意的是主語必須是“資料”比如number, figure, percentage等，不能是其他名詞，而謂語動詞也只能是不及物動詞比如increase, drop等。下面我們來看幾個例子：
number of visitors increased sharply between 1995 and 2005 inChina.
percentage of people aged 15-46 dropped slightly by 10% during the 40 years.
figure for college C rose gradually to 30,000 in2002.
number of aged people over 65 dropped slightly from 1960-1980.
number of aged people over 65 fluctuated between 1 million and 1.2 million from 1940-1950.
2.主+謂+賓此句型結構的`特點在於謂語動詞必須是及物動詞，比如witness, see等，賓語位置要用表示動態變化的名詞比如growth, reduction等，在主語位置上可以仍舊為資料，也可以是地點或者時間段。它對於用主謂結構表達的句子可以作同義轉換，比如：
number of visitors saw a sharp increase between 1995 and 2005 inChina.
a witnessed a sharp increase in the number of visitors between 1995 and 2005.
years between 1995 and 2005 saw a sharp increase in the number of visitors in China.
e + be此簡單句型一般用於對於上述兩種動態資料描寫句型進行同義轉換，be動詞的時態一定要根據資料的時間來改變，否則很容易出錯：
e was an increase in the visits from about 12 to 53 million from 1979 to 1999.
e was a sharp rise in the number of visitors between 1995 and 2005 inChina.
e was a slight decline in the number of aged people over 65 from 1960-1980.
e was a fluctuation between 1 million and 1.2 million from 1940-1950.
