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Ⅲ. Language learning. Read, think and practice.
Getting no fresh air or sunlight and spending too much time inside can make us feel down. 没有新鲜空气或阳光，且花太多时间在室内，会让我们感到沮丧。
A) 朗读并口头翻译下面句子，总结“动名词用作主语”的用法。
1. Running is good for our health. 2. Reading every day can help us learn a lot.
小结：在此类句型中，不能直接做主语，需先加 ing 将其变为。
Getting no fresh air or sunlight and spending too much time inside can make us feel down. 没有新鲜空气或阳光，且花太多时间在室内，会让我们感到沮丧。
A) 朗读并口头翻译下面句子，总结“动名词用作主语”的用法。
1. Running is good for our health. 2. Reading every day can help us learn a lot.
小结：在此类句型中，不能直接做主语，需先加 ing 将其变为。
答案
动词原形；动名词
解析
观察例句"Running is good for our health."和"Reading every day can help us learn a lot."，其中"Running"和"Reading"是动词"run"和"read"加ing后构成的形式，在句中作主语。由此可知，动词原形不能直接做主语，需变为动名词形式。
