on earth与on the earth 区别

on earth与on the earth 区别

on earth与on the earth区别：

一、发音。

1、on earth，英 [ɔn ə:θ] 美 [ɑn ɚθ]

2、on the earth，英 [ɔn ðə ə:θ] 美 [ɑn ði ɚθ]

二、含义。

1、on earth，世界上;究竟， 到底;世上;天底下

2、on the earth，在地球上

三、实际运用举例。

1、on earth

What on earth had Luke done?

卢克究竟做了什么？

Scientists have described the Aral sea as the site of the worstecological disaster on earth .

科学家把咸海描述成地球上最严重的生态灾难发生地。

I can understand why astronauts find it difficult to readjust to life on earth

我能够理解为什么宇航员发现重新适应地球上的生活不容易。

2、on the earth

Let us suppose another planet with conditions similar to those on the earth.

让我们假定另外有一个具有和地球上相似条件的行星。

When the radiant energy of the sun falls on the earth, it is changed into heat energy, and as a result

the earth is warmed.

当太阳的辐射能落在地球上时，就变为热能，于是地球暖和起来了。

The Pioneer probes have on board ultraviolet instruments which are measuring light that we can't measure on the earth.

“先驱者号”太空探测器上装有紫外线仪器，能够对在地球上探测不到的光进行测量。

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Showing Surprise, used at the beginning of a sentence to make it intense or stronger. (tell me what is going on. What is happening?)

Ex: What on earth am I going to do?

Ex: What on earth is going on?

Ex: What on Earth is this?

Ex: Oliver: They went on strike last month.

Luke: What on earth for?

Ex: What on earth is that terrible smell?

Ex: What on earth is Oliver trying to do?

Ex: What on earth makes you think that?