第三人称和名词单数用does（he、she、it、cat、dog等）。
一般现在时用do和does,比如always,usually,often、every day（year）。
第一人称、第二人称和名词复数用do（I、you、we、they、cats、dogs、~s等）。
相关词组
1、Easy does it! 别着急！
2、easy does it 慢慢来
3、Handsome is that handsome does. 行为漂亮才漂亮。
4、Handsome is as handsome does. 行为漂亮才是漂亮。
5、Experience does it. 经验给人教训; 经验...
6、It's dogged as does it. 天下无难事...
7、It's dogged that does it. 世上无难事只怕有心人...
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