明年 + Verb Phrase
明年 (míngnián) means "next year" and is one of the most common time words in Chinese. Like other time expressions, it typically appears before the verb or at the beginning of a sentence to set the time frame. No preposition is needed when using 明年 as a time adverbial.
明年我打算去日本旅游。
míngnián wǒ dǎsuàn qù rìběn lǚyóu.
I plan to travel to Japan next year.
他们明年就要结婚了。
tāmen míngnián jiù yào jiéhūn le.
They are getting married next year.
明年公司计划扩大海外市场。
míngnián gōngsī jìhuà kuòdà hǎiwài shìchǎng.
The company plans to expand its overseas market next year.