"I was sorry that I could not to go to class." Is this sentence correct?

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Reiterate your thesis! You don't have to repeat it word for word, but you can definitely use the thesis as the topic sentence of your conclusion.

"I ran" is a good example of an active sentence, since the action occurs immediately. "I was running" qualifies as a passive sentence since the action has already occurred.

Yes, there is always a period at the end of "etc." no matter where it appears in a sentence.

If you feel you have to start a sentence with "e.g." or "i.e.", it would be less confusing to use the equivalent English phrases "for example" or "in other words."

"Down" is an adverb modifying "glanced." Everything after "down" is an adverbial phrase also modifying "glanced." The adverbial phrase consists first of a prepositional phrase and then an independent clause...

First identify all verbs and adjectives in the sentence. Then identify any words that modify the verbs or adjectives. Those modifiers are adverbs. If the adverbs are modified by other...

"Its," because "it's" is a contraction of "it is" and "its" is possessive.

Use a comma plus 'nor' with an independant clause. For example, "No other venue could be more romantic, nor could it be more peaceful." You can also use the following:...

As is, you need a comma after "therefore" since it is an introductory phrase. But ask yourself which statement you're making is the cause and which is the effect. It...