can 能could 当时能be able to 能will 愿意would 愿意may 也许might 也许shall 将要should 应该ought to 应该dare 敢dared 当时敢have to 不得不has to 不得不(单三形式)had to 当时不得不needn’t 没必要nad better 最好(不是过去式)used to 过去常常must ...
...s
a very forceful personality. 芭芭拉是一个个性很强的人。All candidates
have to take a personality test. 所有候选人都必须接受个性测试。Even though they’re
twins, their personalities are chalk and cheese. 尽管他们是双胞胎,但他们的性格却迥然不同。You...