give an opinion on

to give an opinion on someone's appearance, you can say: i think he's really handsome.

要表示对某人外貌的看法，你可以说：我认为他非常英俊。

he refused to give an opinion on the political situation.

他拒绝对政治形势发表意见。

Under French law, the works council must be informed of any job cut proposals, and give an opinion on them, before they can go ahead.

根据法国法律，任何裁员提议在实施之前都必须知会工会，工会将对此提出意见。

make a remark or give an opinion on

评论；就…发表意见

But Tory MPs are urging Mr Cameron to press ahead with his plan to give more power to English MPs by putting the idea to a vote before the election, in an attempt to put Labour on the wrong side of public opinion.

然而保守党议员正敦促卡梅伦继续推行其计划，在大选前将对是否赋予英格兰议员更多权力举行投票。