分析句子

Only 10% of American adults engage at regular exercise.分析句中介词的用法

Keil 发表于 2023-05-24 15:06
Only 10% of American adults engage at regular exer ...

这句话中的介词是"at"，用来说明动词"engage"的具体方式。"engage at exercise"表示参与锻炼的具体方式。

The following sentences are grammatically incorrec or incoherent.  Improve them and analyze the reasons.

1. The dean issued a bulletin which said the library will remain open on weekends.
2. He spread a rumor that the president was going to resign, led to a great confusion in that country.
3. If leaving alone on a desert island, what would you do first?
4. Do you still rememeber those days when we spent in Hong Kong last year?
5. It seems that more and more of my friends are facing great challenges in his lives.

Keil 发表于 2023-05-25 18:53
The following sentences are grammatically incorrec ...

1. The dean issued a bulletin stating that the library would remain open on weekends.

- Reason for improvement: The original sentence uses "which" instead of "that", which is not grammatically correct. Using "stating" instead of "said" clarifies that it is an official statement.

2. He spread a rumor that the president was going to resign, which led to great confusion in that country.

- Reason for improvement: Adding "which" clarifies that the following clause is a consequence of the rumor.

3. If you were left alone on a desert island, what would you do first?

- Reason for improvement: Using "were" instead of "leaving" makes the sentence conditional and follows the correct verb tense.

4. Do you still remember those days we spent in Hong Kong last year?

- Reason for improvement: The pronoun "that" is not needed and the verb tense should be changed to past tense to match "last year".

5. It seems that more and more of my friends are facing great challenges in their lives.

- Reason for improvement: "His" should be changed to "their" to reflect plural possession.

Often, friends become “friends” because they naturally attract each other because of similar personalities and temperaments.分析句子结构与成分，说明两个because有用法

Keil 发表于 2023-05-27 15:20
Often, friends become “friends” because they nat ...

该句是简单句，主要成分有主语 friends，谓语 become，“friends”作为同位语修饰主语 friends，the other part of “friends”是两个引号来表示表面“朋友”而实际上并不是真正的朋友。

两个 because 在句子中是因果关系，分别表示不同的原因。第一个because是表达原因的连词，连接的是成分 they naturally attract each other 和 similar personalities and temperaments。第二个because是介词短语 because of 的一部分，用来修饰名词短语 similar personalities and temperaments，表示因为性格和气质相似。整个句子意为：通常，朋友之间会因为性格和气质相似而自然吸引，这也是他们变成“真正的朋友”的原因。

1. Pocket money is one of the first ways for children to learn the basics of __1__ (manage) money.
2. You might discourage them from __10___ (buy) bubblegum if you want to protect their teeth from decay.
如上，空格处要动名词，我理解为：动词的含义在非谓语位置用名词形式表达，对不对？为什么？动名词与句子时态有关系吗？

Keil 发表于 2023-06-04 17:39
1. Pocket money is one of the first ways for child ...

你的理解是正确的。动词的-ing 形式在非谓语动词中作动词用，称作动名词，具有名词和动词的双重性质。

动名词的使用与句子的时态有关系，它可以表示与主句谓语同时或先于主句谓语发生的动作，也可以表示在主句谓语发生之后的动作。在上面两个句子中，第一个空格处使用了“managing”，表示儿童学习掌握管理金钱的基础知识是一种正在进行的动作；第二个空格处使用了“buying”，表示要防止孩子的牙齿腐烂，就需要阻止他们购买口香糖这一行为。

The study looked at 13-year-olds who acted old for their age by having "cool" behavior, such as early romantic relationships.
断句，分析结构成份，说明英语句子中逗号的使用方法，跟中文逗号的区别。

Keil 发表于 2023-06-04 22:44
The study looked at 13-year-olds who acted old for ...

断句和分析结构成分如下：

The study looked at 13-year-olds | who acted old for their age | by having "cool" behavior, | such as early romantic relationships.

主语：The study

谓语：looked

宾语：at 13-year-olds

定语从句：who acted old for their age

介词短语作方式状语：by having "cool" behavior

举例状语：such as early romantic relationships

逗号在该句中使用，主要是用于分隔从句和主句，使读者更容易理解整个句子的含义。英语中，逗号通常被用于分隔项目、把握句子节奏和提示意思的关系。与中文逗号的区别在于，英语逗号使用起来更为灵活，并且不像中文逗号那样必须标点符号两端留有空格。