He can't do something like that on his own.不能一个人去做那种事

on one's own独自地； 独立地； 主动地

After graduation, he lives on his own.

毕业后他就独立生活了。

He helped us on his own initiative.

他主动帮助我们。

Are you ready for this?你准备好做这件事了吗

ready for准备从事

Your order is ready for delivery.

你订购的货物可随时交付。

The letter is ready for posting.

信已写好，可以寄走了

Come on, knock it off.拜托，少来了

knock off停止做某事； 减少

My health compels me to knock off work.

我的健康状况迫使我不得不停止工作。

It's after five; let's knock off.

已经五点多了; 下班吧