slowest

She was slow to react.

She was slow in reaction.

她反应迟钝。

She was slow in learning English.

她学习英语很缓慢。

She was slow at learning English.

她不善于学习英语。

这两个词都有“慢”的意思,都可用作副词。它们的区别是：

1.slow除可用作副词外,还可用作形容词或动词。例如:

He caught the slow train to Birmingham.他赶上去伯明翰的慢车。

2.slow侧重于表示状态,而slowly则表示动作的方式。例如:

She walked slow.

她行走缓慢。

She walked slowly.

她缓慢地走着。

3.slowly可用在多种场合,位置较灵活,既可放在谓语动词之前,也可放在谓语动词之后,有时甚至放在句首; slow只用在如go, run, speak, read, burn, drive等动词的后面或how引起的感叹句中。例如:

He walks slowly.他走得很慢。

Do speak slower!说慢一点行吗!

We slowly climbed over the mountain.我们慢慢爬过了山头。

We climbed slowly over the mountain.我们慢慢爬过了山头。

Slowly we climbed over the mountain.慢慢地我们爬过了山头。

4.slow常可用于引申义。例如:

Work became slow and he could earn only a few days' pay a month.活儿变轻闲了,他每月只能挣到几天的工资。

5.slow比slowly语气更强。