1. To love you and to be loved you is my happiness.

2. To love you and to be loved you are my happiness.

(Do we have to use 'is' or 'are'? Which one is correct?)

3. Working hard in the company and playing with others is important.

4. Working hard in the company and playing with others are important.

(Do we have to use 'is' or 'are'? Which one is correct? Can we get the information about that on-line?)

1. You need to change it to "To love you and to be loved by you is my happiness."

2. does not make sense, use one instead
3. incorrect
4. correct

OK. Why is the use different between a gerund and a infinitive?


1. To love you and to be loved by you is my happiness.

2. To love you and to be loved by you are my happiness.

(Do we have to use 'is' or 'are'? Which one is correct?)

3. Working hard in the company and playing with others is important.

4. Working hard in the company and playing with others are important.

infinitive = to love

gerund = loving (The gerund often is used as a noun; most end in -ing

between IS (singular) and ARE (plural) = To love you is BUT to love you (1 thing) AND to be loved (2nd thing) = ARE

Definitely #3 (is) and not #4 because "working and playing" is considered one entity here = (indefinite "that") IS

Sra

1. The correct sentence is: "To love you and to be loved by you is my happiness."

In this sentence, the verb "is" agrees with the singular subject "happiness." So, we use "is" instead of "are."

To confirm this, you can consult a grammar guide or refer to reputable online sources such as grammar websites or online dictionaries. They provide clear explanations and examples of subject-verb agreement, which will help you understand the correct usage of "is" or "are."

2. The correct sentence is: "To love you and to be loved by you are my happiness."

In this sentence, the verb "are" agrees with the plural subject "you." So, we use "are" instead of "is."

To confirm this, you can consult a grammar guide or refer to reputable online sources such as grammar websites or online dictionaries. They provide clear explanations and examples of subject-verb agreement, which will help you understand the correct usage of "is" or "are."

Regarding your question about online sources, yes, you can definitely find information about subject-verb agreement and other grammar rules online. Reputable grammar websites like Grammarly, Oxford Dictionaries, or Purdue Online Writing Lab (OWL) can provide reliable information and explanations on various grammar topics. Simply search for "subject-verb agreement" or any specific grammar rule you need clarification on, and you'll find reputable sources that can explain the correct usage.