Question on 'always' and 'sometimes' in negative sentences.

Thinking SpainDo they mean the same?

If you change the first one, yes. "doesn't sometimes" doesn't work in English.

Sometimes Mr. L. doesn't eat lunch. (OR Mr. L. sometimes doesn't eat lunch.)
=
Mr. L. doesn't always eat lunch.

CJ

Hi Jim,
Thank you for your reply.
So I can say:
a) He doesn't always eat lunch.
b) Sometimes he doesn't have lunch. / He sometimes doesn't have lunch. / Mr. Landon doesn't eat lunch sometimes.
c) He doesn't usually have lunch.
d) He doesn't often have lunch.

Which is the right one here? I guess it is 'a'. Right?
a) He frequen

Hi Jim,
Let me ask you another one please:
So 'Mr Landon sometimes doesn't eat lunch.' means that he often does it. Right?
And 'Mr. Landon doesn't always eat lunch.' means that he often does it. Right?

Thanks

Thinking Spaina) He doesn't always eat lunch.
b) Sometimes he doesn't have lunch. / He sometimes doesn't have lunch. / Mr. Landon doesn't eat lunch sometimes.
c) He doesn't usually have lunch.
d) He doesn't often have lunch.

All are OK.

Thinking Spaina) He frequently doesn't have lu

Thinking SpainSo 'Mr Landon sometimes doesn't eat lunch.' means that he often does it. Right?
And 'Mr. Landon doesn't always eat lunch.' means that he often does it. Right?

Those would be a probable interpretations. Yes.

On the other hand, from the point of view of pure logic, they are not necessary interpretations.

For example, it's log

CalifJimOn the other hand, from the point of view of pure logic, they are not necessary interpretations.For example, it's logically possible that if Mr. L. doesn't always eat lunch, he almost never eats lunch, and we wouldn't say that that is 'often'.

Hi Jim,
Thank you for your reply. Whay can I say? 'There are no facts, only interpretations" - Nietzsche.