Read the lines from dickinson's "the wind began to rock the grass":
the wind began to rock the grass / with threatening tunes and low – / he threw a menace at the earth – / a menace at the sky.
what effect do the verbs rock and threw have on the poem's first stanza?

Although I'm not sure exactly what you're asking, it looks like you'e been waiting a while so I'm gonna give it a shot. At the beginning of it, It says began to rock which is present tense so it makes it sounds as if it is happening as we read it but then threw is past tense which makes it sound like it already happened.

Again I'm just pretty much guessing but that's all I got. Sorry if it didn't help but I tried.

That would be true i believe

It is different everywhere so it just dependsi hope this