Meaning trap

go by

be guided by

to use something, such as information or rules, to make a decision or form an opinion.

phrasal verbB2common

Don't mix these meanings

Same phrase, different job.

be guided by

to use something, such as information or rules, to make a decision or form an opinion.

go by (time passes)

Another meaning of 'go by' is 'time passes'; compare the examples to keep the meanings separate.

Notice where the phrase sounds natural.

I usually go by the instructions when assembling furniture.study
When making important decisions, I prefer to go by facts rather than opinions.IELTS speaking

Pattern: go by + noun/pronoun

WrongDon't go with first impressions.

RightDon't go by first impressions.

'Go BY' = judge/decide from. 'Go with' = choose. Different verbs.

Patterngo by + noun/pronoun

Choose the version that sounds natural in speech.

Stiff We must base our decision on the available evidence.

Natural We can only go by what the evidence shows.

'Go by' is the natural verb for using something as your guide. 'Base our decision on' is heavier.

Words that usually travel with it.

Different from 'go with', which means to choose or select something.

go by (time passes) — Another meaning of 'go by' is 'time passes'; compare the examples to keep the meanings separate.