1.在会上.说英语. Speak eitherChinese or English at the meeting.
2.或者你.那位病人,Either you or him takes care of the patient every day.(就近原则,所以用三单形式）.
3.我们不能允许游戏.We can't allow him to stay at home alone, otherwise,he either watchies TV or plays games.
4.我们这周六.自行车.We either take a bus or ride a bike when we go to park this saturday.
（我学英语专业）