be able / unable to + V 能(够)／不能

be capable / incapable of + -ing 能够／不能

be in a position + to V 能够

can / cannot +V 能／不能

will / will be + V 能／不能

enable … + to V 使…能…

have the ability / capability / capacity / power + to V 用…的能力，能够…

These planes will / can fly at 800 miles per hour .

这些飞机能以 800 英里每小时的速度飞行。

The lathe is capable of carrying out a wide variety of machining operations .

车床能完成各种各样的机加工工序。

In many industrial drives it is necessary to be able to control the speed of a motor .

在许多工业传动(装置)中需要能控制电动机的转速。

We are now in a position to carry out the last of the experiments .

现在我们能进行最后—项实验了。

Hardness of some steels can be increased by heat treating .

某些钢的硬度能通过热处理加以提高。

The gear lever enables the driver to change gear .

变速杆使驾驶员能(变)换排挡。

A current of electricity has the capacity to do work .

电流有做功的能力。

Energy is defined as the capacity for doing work .

能量可定义为做功的能力。

Oxygen has an outstanding ability to combine with other elements .

氧气具有与其他元素相结合的非凡能力。

The ability of a material to unite with oxygen is a chemical property .

物质与氧结合的能力是一种化学性质。

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