为了提高学习效率，他给自己做了详细的计划。

Wèile tígāo xuéxí xiàolǜ, tā gěi zìjǐ zuò le xiángxì de jìhuà.

In order to improve his study efficiency, he made a detailed plan for himself.

为了提高学习效果，他每天都复习。

Wèile tígāo xuéxí xiàoguǒ, tā měitiān dōu fùxí.

In order to improve learning results, he reviews every day.

这种药对感冒很有效。

Zhè zhǒng yào duì gǎnmào hěn yǒuxiào.

This medicine is very effective for colds.