No
yes as you proceed into the building, be sure to drop off your papers.
no, that is definitely not proper grammar.
The proper grammar for that sentence is "She was much better than yesterday." This sentence is in the past tense and correctly compares her current state to how she was yesterday.
Yes, example: Because of heavy rain, the swollen river flooded the village during the night.
The sentence "I wish you were as smart as they." is grammatically correct. It is shortened from "... as smart as they are."
Yes, "The house is not as cheap as he thought" is proper grammar.
Yes, you can use next at the start of a sentence. Next week will have good weather. Next year they are going to Spain for their holidays. Next, put the flour into the pot and stir.
Yes. That sentence is proper as written.
You can start by learning proper grammar. Then she will probably talk to you.
Yes, starting a sentence with "then" is grammatically correct, especially when showing a sequence of events or actions. However, it is usually used sparingly to avoid overuse and maintain variety in sentence structure.
The proper grammar is "There has come a time." "There" is the subject of the sentence and is singular, hence the correct verb form to use is "has" instead of "have."
Yes. For example, What did she point at ? However, do not use 'at' with 'where.'