我同意丽丽的想法，我也觉得你一个星期至少运动三次。每次至少30分钟。

Wǒ tóngyì Lìli de xiǎngfǎ, wǒ yě juéde nǐ yí gè xīngqī zhìshǎo yùndòng sān cì. Měi cì zhìshǎo sānshí fēnzhōng.

I agree with Lili's opinion; I think each week you (should) work out at least 3 times, for 30 minutes each time.

他和我有不一样的想法。

Tā hé wǒ yǒu bú yíyàng de xiǎngfǎ.

He and I have different ideas.

你的想法很有意思。

Nǐ de xiǎngfǎ hěn yǒuyìsi.

Your idea is very interesting.