lǎo / shī / jiàn / yì / wǒ / men / mǎi / yì / běn / shù / xué / jiào / fǔ / lái / gǒng / gù / jī / chǔ

老师建议我们买一本数学教辅来巩固基础。

The teacher suggested that we buy a math study guide to strengthen our foundation.