I would appreciate it if you learn the differences between camisoles and tank tops.
semih92ozdemir I would appreciate it if you learn the differences between camisoles and tank tops. " "Differences" implies that he should learn the finer details of the two garments, like he is a fashion designer's apprentice.
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semih92ozdemirI would appreciate it if you learn the differences between camisoles and tank tops.
In everyday English, it would go "I would appreciate it if you learned the …." The difference between things in this context normally uses the singular: "I would appreciate it if you learned the difference between a camisole and a tank top." "Differences
semih92ozdemirI would appreciate it if you learned the differences between camisoles and tank tops.
As shown, but yours is not a really bad mistake.
Generally, you need the past tense in an if-clause when it's combined with a clause with would.
IF past, ... WOULD .... / ... WOU