十万个为什么·科学启蒙30篇（3）

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月亮滑到太阳前面，就发生日食

A solar eclipse happens when the Moon passes exactly between Earth and the Sun.
Its shadow then falls on part of Earth’s surface for a few minutes.
This only works because the Moon and Sun appear almost the same size in our sky.
Even though the Sun is much bigger, it’s also much farther away from us.
When the Moon covers the Sun completely, daylight turns into twilight suddenly.
Birds may stop singing, and temperatures drop by several degrees quickly.
You must never look directly at the Sun during an eclipse without special glasses.
Partial eclipses show just a bite taken out of the Sun’s bright circle.
People in different cities see different amounts of coverage depending on location.
Next year, a total eclipse will cross parts of Mexico, the U.S., and Canada.

听 → 读 → 学表达 → 懂 → 今天会说这一句 → 跟读录音 → 自己说一句。

Birds may stop singing, and temperatures drop by several degrees quickly. 鸟儿可能停止鸣叫，气温也会迅速下降好几度。
When the Moon covers the Sun completely, daylight turns into twilight suddenly. 当月球完全遮住太阳时，白昼会突然变成暮色。
People in different cities see different amounts of coverage depending on location. 不同城市的人因所处位置不同，看到的遮挡程度也不同。

这篇中文题目最接近哪一句？月亮滑到太阳前面，就发生日食一次学校运动会的通知一份超市购物清单

课文第一句的意思更接近？日食发生时，月球恰好位于地球和太阳之间。今天学校放假了。请把窗户打开。

这一课主要在讲什么？（看英文标题） The Moon Slides in Front of the Sun How to cook noodles A maths worksheet

Birds may stop singing, and temperatures drop by several degrees quickly.

Birds may stop singing, and temperatures drop by several degrees quickly.

第一版：录下来、回听、再听标准音。系统打分以后再加。

用今天的表达，自己说一句。

例子：Birds may stop singing, and temperatures drop by several degrees quickly.