It's fun to do sth.、have fun doing sth
1.It's fun后接to do 不定式。It's fun to cook once in a while, but not every day.偶尔做饭很有趣，但天天做就不行了。2…
一般现在时被动语态
一般现在时被动语态结构：肯定：主语+ am/is/are + 过去分词否定：主语+ am not/isn't/aren't + 过去分词一般疑问：Am/Is/Are+主语+ 过去分词特…
一般将来时的被动语态
一般将来时的被动语态结构肯定句：主语+will be + 过去分词主语+am/is/are going to+be+过去分词否定句：主语+ won't be+ 过去分词主语+am not/is…