【问20】老师, 我曾写过这样一个句子：The Internet is becoming an indispensable part of everyday life, but there is not much use in the developing world. 但外教说这个句子不规范，我不知道错在哪里，请指出。另外，我还看到这样一个句子：Doctors are trying to figure out how to make sure everyone at risk receives a flu shot, and they are calling on federal health department authorities to launch more vigorous public awareness campaigns.不知错在哪里？

答：The Internet is becoming an indispensable part of everyday life, but there is not much use in the developing world句的错误主要出在逗号后面的部分，use指代不够清楚。全句可改为：The Internet is becoming an indispensable part of everyday life, but is not used much in the developing world. 你的第二个句子从语法角度说没有错误，只是and前后的两个句子没有并列关系，可改为：Doctors who are trying to figure out how to make sure everyone at risk receives a flu shot are calling on federal health department authorities to launch more vigorous public awareness campaigns.另一种改法，即在原句的and后加上also也是正确的。你的这两个问题很有代表性。我对你的钻研精神深表敬佩。

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