English

“Elder” is used specifically for family members (e.g., elder brother), while “older” can be used for anyone or anything (e.g., older car, older friend). Both are comparative forms, but their usage depends on context.

Both “elder” and “older” are comparative forms of age, but they differ in usage and context.

Incorrect - You cannot say: “That elder building”
Correct - But you can say: “My elder cousin”

Yes, “than” is generally used to show comparison between two things. For example, “Ajay is intelligent than his sister.” However, in casual speech, “than” may be implied or dropped, like “He's stronger (than him), ” but in formal writing, always use “than.”

Example:

• Ajay is intelligent than his sister.

However, in spoken English, "than" may be implied and not explicitly stated:

• Ajay is intelligent (than his sister).

In formal writing and exams, it's always safer and grammatically correct to use “than.”

Usage of "more" with longer adjectives like "more beautiful" or "more intelligent." Short adjectives, especially one-syllable words like "fast" or "tall," usually take the "-er" form, such as "faster" or "taller."

Examples:

• Vijay is more powerful than Ajay.

• This TV show is more interesting than the other one.

Incorrect - Avoid using “-er” with long adjectives.

Example: Incorrect - Powerfuller - Correct - more powerful

Comparative degree is a form of an adjective which is used to compare two people, things, or situations. It show how one differs from the other either by having more or less of it. Always ensure you're comparing only two entities when using the comparative form.

Structure:

• Adjective + -er for short adjectives for example taller, faster

• More/Less + adjective for longer adjectives for example more beautiful, less important

Example:

• This airstrip is longer than the other one. Here, we are comparing two airstrips based on their length.

Two tenses in English Grammar are used to describe habits. These are Simple Present Tense and Simple Past Tense. 

Simple Present Tense is used to describe current habits. 

For Example: 

• She drinks coffee everyday. 
• He goes to the temple daily. 

Simple Past Tense is used to describe habits of the past. For example. 

• He used to jog every morning. 

• She walked to school everyday when she was a little girl. 

Yes, all the tenses hold equal importance in competitive and entrance exams. While some tenses such as the Present Tense and Past Tense appear more frequently in English grammar questions, understanding and studying all the 12 types of tenses in English ensure better comprehension and accuracy. Various questions on fill in the blanks and setence correction, include questions on tenses. 

Students can refer to the following books to study and understand the topic of complex sentences in English:

Following are the examples of complex sentences:

After you work is done/join us at the restaurant for the dinner.

Dependent clause/Independent clause

Although she was tired/but/she went for shopping.

Dependent clause/conjunction/Independent clause

Because/ it was hot/we did not go out.

Subordinating conjunction/ Dependent clause/ Independent clause