"to worry" versus "to be worried"

[gianglt]

Hi teachers !

In the test "Where are my Glasses?" :: English Errors, Elementary Level # 16, there are 2 sentences :

2). Yesterday she was worried because she thought she has lost her glasses.

(a) was worried
(b) thought
(c) has

5). She worried again because she knew that this would meaning buying a new pair.

(a) worried
(b) knew
(c) meaning

Please explain me, when we should use to worry and when we should use to be worried, what is the difference ?
_________________
Lam Giang

[Mister Micawber]

.
In most situations, I think either will work, gaianglt. We have a number of these pairs:

To worry / to be worried
To tire / to be tired
To laze / to be lazy
etc.

The second form relates to the state/condition we are in, while the first form relates to the action itself.
.
_________________
Canadian-American native speaker
who teaches English for a living at Mister Micawber's
ESL cafe: Interview with Mr. Micawber