Test in prepositions

[Harshavardhan]

when we use although and unless

[Alan]

Hi Harshavardhan,

These words (above) are conjunctions. In their simplest forms they mean:

although = even if
unless = if not.

Two sentences:

Although it often rains here,he never takes an umbrella
Unless he takes an umbrella, he will get very wet.

Alan
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English as a Second Language
You can read my ESL story 'the' vs. 'a/an'