look forward to加过去式

look forward to 后面能加动名词形式或名词和代词。

（因为look forward to中的to是介词，不是动词不定式的符号）

例句如下：

1、 He looks forward to being approved by his mom.

2、He looks forward to getting approved by his mom.

3、 He expects to be approved by his mom.