To identify human genes and understand their roles allows researchers to discover the cause of various diseases.
To contain the meaning of 'by ~ing' or 'while ~ing', can you use 'to infinite' like in the example above?
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1This is all wrong. You should try the English Learners forum. – Ricky Sep 12 '18 at 21:30
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well that sentence was from english translation book. but thanks for the comment. – harry Sep 12 '18 at 21:52
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5Don't use by. Just the gerund clause, with two gerunds. Identifying human genes and understanding their roles allows researchers to discover the cause of various diseases. A gerund is preferred to an infinitive for subject clauses. – John Lawler Sep 12 '18 at 21:52