= come across. come over (to...) = come round (to...). come over (to...) (from...) move from one (usu distant) place to another 从一地（通常为远处）来到另一地
*Why don't you come over to England for a holiday? 你怎么不到英国来度假呢?
* Her grandparents came over (eg to America) from Ireland during the famine. 她的祖父母是在饥荒时期从爱尔兰来的（如到美国）. come `over sb (of a feeling) affect sb （指某种感觉）刺激或影响某人
*A fit of dizziness came over her. 她感到一阵头晕目眩.
* I can't think what came over me, ie I do not know what caused me to behave in that way. 我不知道我是怎么了（我不知道是什么原因使我有那种举动）. come over (to sth) change from one side, opinion, etc to another 改变立场或意见等
*She will never come over to our side. 她决不会站到我们这边来.