Do the sentence "It was raining" and the sentence "It rained" mean the same thing?
Another example: "I walked to the park" vs. "I was walking to the park" mean the same thing? When to use which?
Another example: "I was walking to the park, then it rained" Or "I was walking to the park and it was raining"
To me, all the above sentences have the same meaning.
I am learning past progressive right now and my brain is telling me that it must be different otherwise why have simple past and past progressive. I know how to identify or detect what simple past is and what past progressive is because of the sentence structure. Past progress is easy to identify because Subject + was/were + verb in present progressive form. But I don't really understand when to use it.
Best Answer
Variants of this question have been asked here on ELL many times (for recent examples, see here, here, here, and here). But I really like how you added this detail, because it helps explain your conundrum:
So, let's look at your two sentences:
They are both very similar. They both indicate a walk to the park, a walk that happened in the past. In that sense, they don't really "mean" anything different.
So, why have both tenses? That's because of context. Very few English speakers utter simple sentences like "I walked to the park," or, "It was raining," or, "I saw a dog," unless we are answering a question, or telling a story and furnishing additional information. That's why it's so hard to analyze two simple sentences in isolation and figure out some subtle difference in meaning. Taken by themselves, the sentences don't really have a difference in meaning, they just have a difference in how they get used.
Let's imagine a family sitting around a dinner table. Someone asks:
I might answer:
I wouldn't say, "I was walking the dog," because there was nothing else going on, and there's nothing else to say. The dog and I both got our exercise. That's it. Simple past.
However, let's say someone asks a different question:
Now there's a question that's asking for a story! So, I might begin:
In this case, that bit about me walking the dog merely sets up the story. It explains why I happened to be an eyewitness to the dramatic accident. That part would sound very out of place if I used the simple past when describing the walk with the dog:
(In fact, that version of the story makes it sound like I may have seen the accident after my walk, not during. It doesn't fit well with the story.)
Of course, there are many different ways I could begin this story, not just one. In fact, I might begin my narrative a bit differently every time I was asked to recount the details:
Notice how I'm sneaking in some additional information with these two versions. The first one indicates that at least some of the streets in my neighborhood have sidewalks. The second one suggests that, if my usual walk is an out-and-back, I was somewhere near my turnaround point when I witnessed the accident.
But don't let those little details get in the way of my main point: When you just look at two sentences – one in the simple past, the other in the past progressive – don't search for some difference in meaning. You'll drive yourself crazy. Instead, try to imagine situations where one would be more appropriate than the other: