join后面加什么人称代词

　　The molecules join together to form long strings.

　　分子连接在一起形成长串。

　　She gave up her job to join her husband's campaign.

　　她辞了工作以参加丈夫的竞选活动。

　　He chose to join the company as a market researcher.

　　他选择加入这家公司当一名市场研究员。