this year 不论在句首或是句尾,通常前面要是有介词,最常见的就只会是 during 这个词来表达“期间”,或 for 来表达“为了..”
in 加在 this year / this month 或 this week 前面,通常必须是这些时间名词的所有格,in 直接指的是所有格后面跟的事件.例如：
Everyone must cast a vote in this year's stockholders' meeting.
He works really hard trying to be number one in this month's sales contest.
John has a really good chance to compete in this week's Men's Single final.
