However, assuming you’re talking about English grammar:

A conditional sentence example would be:

“If you pay me money, I’ll give you a reward.”

Notice that the conditional clause begins with the word IF, and it sets up a condition for the main clause to be true.

Here’s a dandy website that covers conditional clauses:

http://www.ego4u.com/en/cram-up/grammar/conditional-sentences

As for conjunctions, AND BUT and BECAUSE are three conjunctions.

“I like computers BECAUSE they’re nifty.”

Here’s a website that might help you out:

http://www2.gsu.edu/~wwwesl/egw/bryson.htm

In other words, just google

conditional clauses

conjunctions