Difference between sometime and sometimes

[jian]

Test No. incompl/elem-16 "Learn it by heart", question 1

I ......... don't know how to learn new words by heart.

(a) some time
(b) sometimes
(c) something

Test No. incompl/elem-16 "Learn it by heart", answer 1

I sometimes don't know how to learn new words by heart.

Correct answer: (b) sometimes
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what the difference between some time and sometimes

[Alan]

Hi Jian,

Sometimes means occasionally/not very often. Some time means at a time in the future which is not definite. Some time I shall go on a world cruise but I'm not sure when.

Alan
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English as a Second Language
You can read my ESL story Book Expressions

[Zaza]

thank you Mr Alan explan sometimes &some time.

[Sajjad Rasvi]

Give few Example for some time