Answer:
- She was looking upset that day as her friends hadn't come to see her. --> complex sentence.
1. She was looking upset that day --> main clause
2. as her friends hadn't come to see her --> subordinate clause
- England scored 350 runs in 50 overs, but team India easily chased the target. --> compound sentence
1. England scored 350 runs in 50 overs --> independent clause
2. but team India easily chased the target --> independent clause
Step-by-step explanation:
The best way to identify what type of sentence we are dealing with is by looking for clauses. A clause will have a subject and a predicate. Once we find it, we need to identify what type of clause it is.
To do that, we can look for conjunctions, which are words that connect the different clauses and establish a relationship between them. A coordinating conjunction will connect two independent clauses and create a compound sentence. Since there is only a few of them, they are easy to memorize by using the acronym FANBOYS (for, and, nor, but, or, yet, and so). Notice that in the second sentence we analyzed above, we have the conjunction "but".
A subordinating conjunction connects a main clause to a subordinate clause and creates a complex sentence. In the first sentence we analyzed above, we have the conjunction "as" introducing an explanation.