What page of Swan? 2: 'We can use a past tense for a presen t meaning after 'as if/though'. 'Went' is present unreal comparison: You look as if you didn't like my soup.
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AnonymousHe talked as if he was rich, but he wasn’t”.This speaks of 2 pasts which occur at the same time: talking and being/not being rich are contemporaneous. However, in your original—He took an effective painkiller, and so he could continue his day as if all his health problems had gone away—The departure of the pain presumably happened before he c
nagariya1.He acts as if he knows the answer this means he indeed knows the answer.No, that is not true. The sentences do not reveal the truth of his knowing or hurting himself; they only speak to probabilities.
nagariya1.He acts as if he knows the answer this means he indeed knows the answer.Not necessarily. The 'as if' removes the certainty.
nagariya2.He acts as if he knew the answer this means he doesn't know the answer.Now.Not necessarily.
nagariyaWhich one is correct.1.He acted as if he knew the answer