"Please think to send me your solution by next Friday. " Is it correct? [closed]

Solution 1:

Even though the meanings of the two expressions are quite closely synonymous, unlike 'remember to [+V]', '[not] think to [+ V]' is what is called a negative polarity item; it is only found in questions and negative statements.

• Did you think to congratulate Jill on her promotion?
• I didn't think to bring extra clothing.

We'd never say, for instance,

• *I thought to take my umbrella ('remembered' works here, of course)

Longman has examples of the negated form; it also has some false positives (thought = considered).

The usage is a bit starchy, especially the interrogative form.

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Not to be confused with What do you think to (= about taking) a walk along the cliff path?, 'think to [+ N]'.