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Please help me distinguish passive or active structure in some sentences:

eg: i have worn out my shoes

my shoes are worn out <<<<how can shoes wear out by themselves?


i was grieved by the bad news /i grieved to hear it <<<i'm confused why both sentences are ok?


can i use both passive and active structure in both example? thank you so much.

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colingco

my shoes are worn out <<<<how can shoes wear out by themselves?


It is a property of the verb "wear out" that the transitive object can become the intransitive subject. For example:

a) I wore out my shoes.
b) My shoes wore out.

There are quite a few verbs like this in English.

In "my shoes are worn out", "worn out" is normally understood as adjectival (describing the state of the shoes). In this case it does not particularly distinguish which of (a) or (b) has happened. It could also be passive verbal (passive form of (a)-like usage) in a special context.

colingcoI was grieved by the bad news /I grieved to hear it <<< I'm confused why both sentences are ok?

"grieve" is another case like "wear out", where object can become subject. Something can grieve you, and you can also grieve (over/about something). "I was grieved by the bad news" (literary-sounding) is the passive form of the former sense.

Comments  

Thank you for your explanation in details. Emotion: smile