我們還可以借助某些詞語用簡單句表達原因結(jié)構(gòu)。例如：
1. The reason for this change is quite obvious.
2. Diligence is the key factor of success.
3. Idleness is the root of all evils.
4. He was ashamed to have made the mistake.(=He was ashamed that he had made the
mistake. =He was ashamed because he had made the mistake.)
除了上述的例句外，英語中還有很多或易或難的表達原因的結(jié)構(gòu)。我們在進行寫作訓(xùn)練的時候，不能滿足于一知半解，要講究書面語言的正確性和準確性。比如，because是最常用的引導(dǎo)原因從句的連詞，語氣，表示直接的原因，若because置于句首，后面的主句不能再用so。用as引導(dǎo)的原因從句語氣較弱，所說明的原因是附帶的，而since表示的原因暗示著是稍加分析之后才能推斷出來的原因?！?BR> 否定結(jié)構(gòu)
考生病句
1. Some people think we needn't to worry about fresh water.
2. Nowadays many people don't like to go to the movies, too.
正確表達：
1. Some people think we needn't worry (或don't need to worry) about fresh water.
2. Nowadays many people don't like to go to the movies, either.
評議與分析：
例句1選自96年1月四級考生作文，例句2選自92年1月六級考生作文。例句1 的錯誤在于該考生混淆了need作為情態(tài)動詞和作為普通動詞的用法。need作為情態(tài)動詞時，主要用于否定句，后面的動詞不帶to, needn't worry，作we的謂語。need作為實意動詞時，可用于肯定句、否定句和疑問句，don't need to worry 中的to worry作don't need的賓語。例句2的錯誤在于該考生混淆了too和either的區(qū)別，這兩個詞都表示"也"的意思，但是在英語中too, also只能用于肯定句，而either只能用于否定句?！?BR>
1. The reason for this change is quite obvious.
2. Diligence is the key factor of success.
3. Idleness is the root of all evils.
4. He was ashamed to have made the mistake.(=He was ashamed that he had made the
mistake. =He was ashamed because he had made the mistake.)
除了上述的例句外，英語中還有很多或易或難的表達原因的結(jié)構(gòu)。我們在進行寫作訓(xùn)練的時候，不能滿足于一知半解，要講究書面語言的正確性和準確性。比如，because是最常用的引導(dǎo)原因從句的連詞，語氣，表示直接的原因，若because置于句首，后面的主句不能再用so。用as引導(dǎo)的原因從句語氣較弱，所說明的原因是附帶的，而since表示的原因暗示著是稍加分析之后才能推斷出來的原因?！?BR> 否定結(jié)構(gòu)
考生病句
1. Some people think we needn't to worry about fresh water.
2. Nowadays many people don't like to go to the movies, too.
正確表達：
1. Some people think we needn't worry (或don't need to worry) about fresh water.
2. Nowadays many people don't like to go to the movies, either.
評議與分析：
例句1選自96年1月四級考生作文，例句2選自92年1月六級考生作文。例句1 的錯誤在于該考生混淆了need作為情態(tài)動詞和作為普通動詞的用法。need作為情態(tài)動詞時，主要用于否定句，后面的動詞不帶to, needn't worry，作we的謂語。need作為實意動詞時，可用于肯定句、否定句和疑問句，don't need to worry 中的to worry作don't need的賓語。例句2的錯誤在于該考生混淆了too和either的區(qū)別，這兩個詞都表示"也"的意思，但是在英語中too, also只能用于肯定句，而either只能用于否定句?！?BR>