Due Tuesday, February 5. Make a printed copy by midnight — hand in on Wednesday.
Let's be responsible and not blame Joe for the botched contract. Meaning: We should take responsibility for the botched contract and not blame it on Joe.
Let's not be responsible and blame Joe for the botched contract. Meaning: We should duck responsibility for the botched contract and use Joe as the fall guy.
Everyone says Mary is so generous, but I've never forgotten to contribute my fair share of the tip at lunch. Implication: Mary didn't leave enough for her share of the tip.
Hillary is every bit as capable of being Commander in Chief as Bill was. Presupposition (if one meant this as a complement): Bill was a good President. Presupposition (if one meant this as a snide remark): Bill wasn't a good President.
I always rely on his knowledge of the stock market, and buy what he recommends selling. The phrase buy what he recommends selling cancels the main clause I always rely on his knowledge of the stock market