我终于跟他说了我的感想。

Wǒ zhōngyú gēn tā shuō le wǒ de gǎnxiǎng.

I finally told him how I felt.

我想在这里分享一下我的感想。

Wǒ xiǎng zài zhèlǐ fēnxiǎng yíxià wǒ de gǎnxiǎng.

I’d like to share my thoughts here.

看完这本书后，我有很多感想。

kàn wán zhè běn shū hòu, wǒ yǒu hěnduō gǎnxiǎng.

After reading this book, I have many thoughts and reflections.