如果没有任何主语和宾语的限制，更口语的说法就是
Love at the first sight 一见钟情
如果表达某人对某人一见钟情
fall in love with sb. at the first sight
例如 He fell in love with her at the first sight.
注意,加定冠词the
fall fell 的词形变化即可
额外奉献"
be in love with sb.
爱上某人