Topic: は and word order
Before I go shooting my mouth off about this, I have to emphasize that I'm still a beginner and I could be, for all I know, completely wrong. But hey, that's what discussion is for. ![]()
In this section I think you simplified sentence order a bit too much.
In particular, it claims that anything before the verb can come in any order, which implies that this can be done with topics marked by は (since it doesn't say you can't). In fact, the example sentences do rearrange "私は" in this way.
However, I think Standard Japanese does require the topic to come first in the sentence (please correct me if I'm wrong). It only makes sense after all: you can't start talking about a topic before you actually introduce the topic. (I know that conversational Japanese does sometimes say things like 何だ、それは?, but I'm talking about "grammatical" Japanese.) Saying something like 公園で私はお弁当を食べた。 strikes me as saying something like, "At the park -- oh, wait, we're talking about me here -- I ate a boxed lunch." It's not something you'd ever say unless your thinking was a bit muddled and you're trying to patch it up mid-sentence.
There's also the point that just because you can arbitrarily rearrange stuff doesn't mean you should, and there's definitely a conventional word order (高橋さんがお酒を飲んだ is far more common than お酒を高橋さんが飲んだ). So the guide is correct in saying that you will probably be understood even if your word order is arbitrary, but if you want to speak natural Japanese, you have to do more than that, whereas the guide gives the impression that you don't.
- Kef