1、表示愿意、喜欢、不愿意等

I'd love a coffee.
我想喝杯咖啡。
I'd be only too glad to help.
我非常愿意帮忙。
I'd hate you to think I was criticizing you.
我可不愿意让你认为我是在批评你。
I'd rather come with you.
我倒愿意和你一起去。
I'd rather you came with us.
我倒愿意你和我们一块儿去。

2、提出拿不准的看法

I would imagine the job will take about two days.
我猜想这工作大概需要两天左右的时间吧。
I'd say he was about fifty.
我猜他五十岁上下。