Kudos. I like this - you obviously put a lot of work into it. A few suggestions:
Slide 2: I would not put most of these into an avoid/use classification system because there are actually specific rules/idioms that govern the use of these and the alternatives. For example:
- "Like" v. "Such as": Use "like" to compare similar but DIFFERENT things (e.g. "My bad habits are like your bad habits"). Use "such as" to give an example (e.g. "I have many bad habits, such as biting my nails")
- , which v. appositive v. , -ing: Use ", which" to describe the immediately preceding noun (it can be the actual noun or an object of the preposition describing the noun) with a clause. Use a noun (i.e. an appositive) to rename the immediately preceding noun with another noun. Use ", -ing" to modify the subject and verb of the sentence. For example, the following have vastly different meanings:
- I ran down the street, which was chasing after a car. (Incorrect, since the street was chasing the car.)
- I ran down the street, a car. (Incorrect, since the street is being called a car.)
- I ran down the street, chasing after the car. (Correct because now I was chasing after the car while running down the street.)
- economical v. economic: Yes, the OG problems have "economic" as the correct answer, but the issue is just one of meaning. I can create perfectly correct alternative examples that would prefer the use of economical (a smart money decision) over economic (just dealing with money, whether the outcome is good or bad).
- As a result of v. result from: Each of these can be correct (e.g. As a result of his determination, he achieved a great GMAT score).
- but v. although: Different usages and grammatical constructions - neither is wrong. In connecting clauses, "but" suggests equality between the conflicting clauses (e.g. "You studied, but I partied" - equal importance) while "although" subordinates the clause following it (e.g. "Although you studied, I partied" - here "I partied" is more important)
Slide 13: Better to understand what "that of" and "those of" add with respect to the meaning rather than a "too short"/"better"/"wordy" classification. "That of" (singular) and "those of" (plural) each take a comparison and drop it down one level. Check these out:
- "Restaurant A is bigger than Restaurant B" - compares two restaurants.
- "Restaurant A has bigger tables than the tables of Restaurant B" - compares two objects owned by the restaurants, but is wordy because it reuses "tables".
- "Restaurant A has bigger tables than Restaurant B" - a bad comparison because it compares tables to a restaurant.
- "Restaurant A has bigger tables than those of Restaurant B" - correctly compares tables of one restaurant to tables of another restaurant because "those of" drops the comparison from Restaurant B to something owned by Restaurant B (and no confusion because we only have one sub object of Restaurant A at which to point).
You can also cut out slides 24 and 25.
Thanks for sharing!