1. If they had tried their best, they would have succeeded in the interview. (subjunctive mood)

2. As they didn't try their best, they didn't succeed in the interview.
3. As they didn't try their best, they wouldn't succeed in the interview.
4. As they didn't try their best, they couldn't succeed in the interview.

#2, 3 and 4 are in the indicative mood.
What is the same as Sentence 1 among Sentence 2, Sentence 3, and Sentence 4?

What about Sentence 3? Does this the same as Sentence 1 as well?
What is the difference?

Already addressed:

http://www.jiskha.com/display.cgi?id=1183694049

Thank you for your answer. Would you let me know the sentences which are the same as Sentence 1 (#1)?

None of the other sentences is the same as #1. Sentences 2, 3, and 4 have similarities among themselves, but not to #1 ... unless you're interested in really trivial stuff, such as "they" and "their best" and "in the interview."

=)

Well, there is one other thing.

All four sentences begin with a subordinate (dependent) clause, and end with the main (independent) clause.

To determine which sentence is the same as Sentence 1 (#1), you can analyze the structure and meaning of each sentence.

Sentence 1: If they had tried their best, they would have succeeded in the interview. (subjunctive mood)

Sentence 2: As they didn't try their best, they didn't succeed in the interview.

Sentence 3: As they didn't try their best, they wouldn't succeed in the interview.

Sentence 4: As they didn't try their best, they couldn't succeed in the interview.

Among Sentence 2, Sentence 3, and Sentence 4, none of them is the exact same as Sentence 1. However, they all share a similar structure with a subordinate (dependent) clause at the beginning and a main (independent) clause at the end. The sentences differ in terms of their verb forms and the level of possibility or certainty expressed.

In Sentence 3, "As they didn't try their best, they wouldn't succeed in the interview," the use of "wouldn't" indicates a hypothetical situation or a future possibility. It suggests that if they didn't try their best, they are unlikely to succeed in the interview. This differs from the meaning expressed in Sentence 1, which states that they would have succeeded if they had tried their best.

In summary, Sentence 1 (#1) is unique among the given sentences. Sentence 3 shares a similar structure but expresses a different level of possibility or certainty in relation to the outcome of the interview.