It's basically the same. "Slacking" means to be sloppy (or "not to be working carefully enough") with something. "No slacking" means "Do your job well!" "Slacking off" means to start being sloppy. (Or to stop being careful with your work). "No slacking off!" means "Don't stop doing your job well!" You can say these in situations where somebody is working for you, for example cleaning your ship: "No slacking! If it isn't 100% clean, you will do it again!"

The writer used "go back", because it was used together with witnessed (and witnessed is already past tense) He witnessed the light flash. + He witnessed the light go back. = He witnessed the light flash, then go back... Remember "go back" is still together with "witnessed"... :)

Wir sagen viele böse Sachen... ;-)

That's a really cool idea for a blog! Here are some ideas what I would call that part: "Conversation Close-up" "Dialogue Snippets" "Now what did they say?" And some less serious ideas: "The diary of a soap addict" "Pearls of wisdom" "Soap Addicts Anonymous" "The TV crack Journal" I guess if you want something more generic, then "English study notes" is a good choice.

"And the like" is usually used after only one item in a sentence: "Teachers and the like are not welcome on this playground" "And so on" is usually used after a list of items and stresses that the omitted can be known simply by thinking about it. ("And so on" as in "and you already know how this list goes on") "We went fishing, scuba-diving and so on." "I went to a Christmas party with Mary, Joseph, Joshua and so on." "Etc" is short for "Et Cetera" which comes from latin and means "and other things". It is a little more formal and hardly ever used in spoken English, while it means pretty much the same as "and so on." A friend of mine always said "yada, yada, yada" to express the same meaning. According to wikipedia it comes from a TV Show called "Seinfeld", not sure if that's where she picked it up.

Should be: 我们五个人为什么一起去了一家中国饭馆吃饭 1. only one “一”。一起means together. 2. 中国饭馆，not 中文饭馆。中文is used when talking about the language. Otherwise it's good.

dass du da nicht hin bist. Das ist schon besser, dass du da nicht hin(gegangen) bist. :)