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2answers
2k views

“while at the same time” + -ing form?

In following sentence, I'm not sure if I have to use the -ing form or the infinitive. I wanted to get rid of X, while at the same time not assuming/ assume that... The -ing form sounds better, ...
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3answers
321 views

Why different tenses? [duplicate]

Possible Duplicate: Using verb tenses correctly This is a quote from The Great Gatsby: She smiled slowly and, walking through her husband as if he were a ghost, shook hands with Tom, ...