useless用法总结

He knew it was useless to protest.

他知道抗议是徒劳的.。

I was conned into buying a useless car.

我上当受骗买了辆不能用的汽车。

I'm useless at French.

我的法语不太行。

It is useless to speculate why he did it.

对他为什么这么做妄加猜测毫无用处。

The measures were decried as useless.

这些措施受到指责，说是不起作用。