假设你写一个简单的独立的句子 people play sport。 然后下面的句子结构都是错的。这些句子一出现，你的分数很有可能就是5.5分。
1、独立的句子不能充当主语
例：people play sport is healthy.
修改：people can stay healthy, if they play sport.
2、独立的句子不能放在介词后面
例：the proportion of people play sport increased.
修改：the proportion of people who play sport increased.
3、独立的句子不能放在there be后面
例： there are many people play sport in this city.
修改：there are many people who play sport in this city.
4、独立的句子不能和另外一个独立的句子用副词相连
例：People play sport, thus, they can stay healthy.
修改1(逗号改成;或者.)：People play sport; thus, they can stay healthy.
修改2(副词改成连词)：People play sport, so they can stay healthy.
5、独立的句子不能和一个从属连词(although, while, when等)单独成句
例：People can stay healthy. Because people play sport.
修改：People can stay healthy, because people play sport.
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