Function of 令 in 你日日喺我耳邊唱歌令我好壓抑 (cantonese)
令 has the meaning of &quot;make&quot;

你日日喺我耳邊唱歌[令]我好壓抑
You sing by my ear side everyday [make] me very depress

對 means &quot;to&quot;

你日日喺我耳邊唱歌, [對]我是一种折磨
You sing by my ear side everyday, [to] me is a kind of torture
You sing by my ear side everyday is a kind of torture [to] me

Notice: &quot;令&quot;(make) is a verb. &quot;對&quot; (to) is a preposition