- ..."Can" is more likely when you are addressing a particular person. "Can" expresses ability, so we tend to make some sort of appraisal of whether the person being addressed actually has that ability. When addressing a general audience, some of them may be so unimaginative that they cannot imagine whatever it is. "Could" is far less assertive,...
I've seen many native speakers use this sort of "when + present participle" construction where the subject of the main clause does not match with that of the dependent clause. Isn't this a case of dangling modifier? Or unlike "after + present participle" and "before + present participle", the construction "when + present participle" is an exception?
The irony is that the answer is no: in the particular case at hand it does not matter much. >> Referring to cases where the meaning is clear. Though I admit I'd rephrase here myself.
– Edwin Ashworth Nov 14 '20 at 12:14