the best thing to do
fixed phr..fixed phr.. the most helpful or correct action to take in a specific situation.
fixed phr.. a superlative construction used to offer advice or identify the optimal course of action among alternatives.
The best thing to do is call the doctor.
If you get lost in the city, the best thing to do is find a police officer.
When the engine starts making that specific rattling sound, the best thing to do is pull over immediately to avoid permanent damage.
usually followed by the verb 'is' and then an infinitive or a clause.
this phrase is a useful 'chunk' for giving advice; it sounds softer and more natural than using 'must' or 'should' in many social contexts.
The best thing for doing is wait.The best thing to do is wait.the phrase requires an infinitive 'to do' rather than a gerund 'for doing'.