This hole can deepen and widen with the cold weather and the growth of its body.

This hole can be deepened and widened.

This (attribute deleted); Holes (theme reserved); Can (can be retained as an adverbial verb); As the weather gets colder, the body gets bigger (adverbial deletion); And (conjunction deletion); Deepen and broaden (predicate reservation).

There are two abbreviations:

First, remove all the branches and leaves, only keep the trunk. For example, "the wonderful performance ended with warm applause" was shortened to "the performance ended".

Second, remove most of the branches and leaves, and keep the trunk and a few branches and leaves. Here's what needs to be kept:

Negative words:

Negative words in negative sentences. If "I absolutely disagree with your unreasonable request" is simplified to "I disagree with the request", then "No" must be retained.

"Ba" and "Bei":

"Ba" and "Bei" in "Ba" and "Bei" and their related important words, such as "He brought my beautiful water cup", are all simplified to "He brought the water cup". Remove the modifier, who (refers to the character)-he, what (refers to the action)-brings (my) water cup.

Interrogative words:

Words expressing doubt in interrogative sentences should be kept. For example, "Why did the fifth-grade athletes win several championships in the sports meeting?" Why did the athletes take the champion?