老师说，只要你认真听课，成绩一定会上去。

Lǎoshī shuō, zhǐyào nǐ rènzhēn tīngkè, chéngjì yídìng huì shàngqù.

The teacher said that as long as you listen carefully in class, your grades will definitely improve.

她这个月的工作成绩很好。

Tā zhè gè yuè de gōngzuò chéngjì hěn hǎo.

Her work performance this month is very good.

他的学习成绩比去年好多了。

Tā de xuéxí chéngjì bǐ qùnián hǎo duō le.

His study grades are much better than last year.