How to use the Spanish verb "Alegrarse - To be glad" avoiding to be sad, just because it´s not being used correctly

Why does the Spanish verb "alegrarse de" require infinitive or subjunctive even for known past events?


Firstly, let me express you my happiness for having me the opportunity to try reveal, how to use the verb “alegrarse” and not feel frustrated for misunderstanding how to use it.

Note!
Alegrarse” is a pronominal verb, what it means that is conjugated along with an “reflexive pronoum”: Me / Te / Se / Nos / Os / Se
I am going to classify this question in 4 key issues:
  1. Alegrarse + de + infinitive (of something) - To be glad of something
  2. Alegrarse + de + que + subjunctive (that something happens)
  3. Alegrarse + que + subjunctive (that something happens)
  4. Alegrarse + noun or infinitive
Let´s go ahead;
1. “Alegrarse + de + infinitivo” does not require the subjunctive, but rather the infinitive.
Why?
Because the subject of the sentence is the same person that receives the action of the verb: Yo / Tú / Él – Ella – Usted / Nosotros / Vosotros / Ellos – Ellas – Ustedes

It means that the subject (the same person) provokes the happiness to himself.
It is working as “reflexive meaning

Yo me alegro de responder a tu pregunta – I am glad to answer your question.
Nosotros nos alegramos de estar en esta ciudad – We are glad to be in this city.
Él se alegra de vivir en París ­– He is glad to live in Paris.

2. “Alegrarse + de + que + subjunctive” This structure requires always the subjunctive, even if the events are known pasts or real facts.
Why?
Because in this case they are two subjects in the sentence:
Yo me alegro de que hagas (present subjunctive) esta pregunta. - I am glad you ask this question.

Who is the subject in the sentence above?
Yo / Tú - The focus is on me not on you

Ellos se alegran de que vosotros hayais venido (past perfect subjunctive) pronto a trabajar - They are glad (that) you had arrived early to work.
Now, the subjects are: Ellos / Vosotros - The focus is on them not on you.

3. “Alegrarse + que + subjunctive” This structure requires always the subjunctive, even if the events are known pasts or real facts.

A mí, Me alegra que vosotros hayáis venido a mi fiesta - I am glad that you had come to my party.

Now perhaps you are wondering, what is the difference between 2) and 3) items.
Well, let me explain.

Remember that in Spanish language we have some verbs that are always conjugated in 3th person singular or plural. Verbs called “physical or psychic perception” like: gustar, apetecer, importar, molestar, encantar, etc.

Why is this? Because who triggers the action is not me, it is the complement “grammar subject”
Me gusta el cine - The cinema likes me à “el cine” is the grammar subject, and “me” is the indirect pronoun
Me molestan los ruidos ~ The noise bothers me à “los ruidos are the gramar subjecto, no “yo”

In the same way works the verb “alegrarse” when we want to emphasis who triggers the action.

A mí, me alegra que vosotros hayáis venido a mi fiesta – I am glad (that) you have come to my party
The grammar subject in the sentence above is “que vosotros hayáis venido a mi fiesta”

A nosotros, nos alegra que vosotros hayáis venido a nuestra fiesta – We are glad (that) you have come to our party.
Watch out! The verb “alegrarse” doesn´t change the number in both sentences.

And the last but not least.

4. “Alegrarse + noun or infinitive” is followed by a noun or infinitive, not by a subordinated clause, the number of the verb “alegrarse” changes. It depends if the noun is singular or plural. The infinitive is always singular.

A mí, me alegran los días con mucha luz natural - I rejoice the days with lot of natural light
A ellos, les alegra el sabor dulce - They rejoice the sweet taste.
A nosotros, nos alegran las vacaciones en verano - We rejoice the summer holidays

Well, that´s all.
I hope this explanation has been useful to solve some questions about the uses of the verb “alegrarse”.

I hope that you feel more confident using the verb ‘alegrarse’, after reading this article.

Please let me know if you have any question, comment or suggestion.

Kind regards.
Antonio
27 de septiembre de 2018
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► About me. ¡Hola! I was born in Madrid (Spain) so my accent is "castilian." I am a certified Spanish teacher. I know what problems you may encounter through your studying process and I will help you overcome them. Learning a new language is an exciting journey, not only because we are learning how native speakers talk, in addition we are learning their culture, what in some way it transforms and enriches us. I experimented it while I was studying English and Portugues and currently studying French. I am working exclusively as online Spanish teacher, so I am full time available to follow your learning process. ► Training & Experience I have a Master´s Degree as Spanish Teacher for foreigners / Second language at "Spanish Educational University" (UNED) I am certified Spanish Expert Teacher for business or specific purposes at "Complutense University of Madrid" I follow my training through various specialized courses supported by "Instituto Cervantes" I have been teaching Spanish ...
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► About me. ¡Hola! I was born in Madrid (Spain) so my accent is "castilian." I am a certified Spanish teacher. I know what problems you may encounter through your studying process and I will help you overcome them. Learning a new language is an exciting journey, not only because we are learning how native speakers talk, in addition we are learning their culture, what in some way it transforms and enriches us. I experimented it while I was studying English and Portugues and currently studying French. I am working exclusively as online Spanish teacher, so I am full time available to follow your learning process. ► Training & Experience I have a Master´s Degree as Spanish Teacher for foreigners / Second language at "Spanish Educational University" (UNED) I am certified Spanish Expert Teacher for business or specific purposes at "Complutense University of Madrid" I follow my training through various specialized courses supported by "Instituto Cervantes" I have been teaching Spanish ...
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