一者“肯定”
I am...(
过去式用was)
She/He/It is...(过去式用was)
也可以用“either...or”(但是这个是其中一个是-)
比如：Either Mary or Peter is attending the party.(意思是Mary或者Peter会出席派对。)
两者“肯定”
They are...(过去式用were)，也可以用“both”
比如：They are my friends.=Both of them are my friends.=They are both my friends.
【名字的话，两个人或以上用are/were，一个人用is/was】
一者“否定”，+not就好
比如：I am a boy.>>>>>>I am not a boy.
They are not going to the party.
两者“否定”,可用“neither...nor”"Both not"
Neither of the men were chosen.（意思是两个男人都没被选上。）
Dancing and singing both are not my things.