C2 used to show what is the single or main reason why something mentioned in the first part of the s

中文解释

可是，但是;不过，只是 I\'d invite Frances to the party, only (= but I will not because) I don\'t want her husband to come. 我本想邀请弗朗西丝参加聚会，只是我不想让她的丈夫来，所以也就不邀请她了。