Crossing the River to School为什么Crossing要加ing？

Question

如题所述

Answer 1

回答如下：
你提供的是短语，不是完整的句子。因此，该短语既可以判断为动名词短语，也可以判断为现在分词短语(它们形式一样，都是动词加-ing。)，但二者用法不尽相同。现分别叙述如下：
1. 动名词：可以作主语、宾语、表语、定语、同位语、(少见)宾补。例如：
Tending the old lady is her job.
We like listening to light music.
His job is tending the patient.
That is a swimming pool. (相当于... a pool for swimming, 动名词作定语表示用途。)
His dream, going abroad, has come true.
We call this behaviour being absent from work.
2. 现在分词：可以作表语、宾补、定语、(时间、条件、原因、让步、方式、伴随、结果)状语。例如：
His novel is very moving.
We find this film very interesting.
I saw her cooking in the kitchen.
This is a burning stick.
The man standing there is my uncle.
Crossing the street, you must be careful.
Being ill, he didn't come.
We stood there saying nothing.
Getting angry with Mary, I went there with her.

Answer 2

Crossing the River to School  过河上学

动名词做主语，这块是非谓语动词的知识。

非谓语动词：不能单独作谓语，但同时保留动词某些特征的动词形式。相当于名词、形容词、副词，能做除了谓语之外的其他句子成分。

【分三类】：动词不定式、动名词、分词。

【特点】：无人称和数的变化，

          有时态+语态变化

          还可以  有自己的宾语、状语等

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像你问的这个，做主语的，类似【举例】：

Clinmbing mountains is great fun. 爬山很有趣。

Collecting stamps can enlarge one's knowledge. 集邮可以扩大一个人的知识面。

英语其实蛮有意思，希望能帮到你，一起探讨学习

Answer 3

Crossing the River to School是非谓语，不是完整的句子，后面还有谓语，一个句子不能有多个谓语，其中一种处理方式是用非谓语了。