What does this idiom mean: "to hit the sack"?

[natasha]

Test No. incompl/advan-74 "At the End of the Day (3)", question 2

I think it's time for me to hit the sack, which need be no ......... of the softness of the mattress.

(a) criterion
(b) critique
(c) criticism
(d) critical

Test No. incompl/advan-74 "At the End of the Day (3)", answer 2

I think it's time for me to hit the sack, which need be no criticism of the softness of the mattress.

Correct answer: (c) criticism
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hit the sack

natasha

[Torsten]

If you hit the sack, you go to bed.
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[Snoopy_Blah_Blah]

I think it's time for me to hit the sack, which need be no criticism of the softness of the mattress

"which need be no ........." What kind of gramatical construction is it? Could you explain, please?

[Alan]

Hi,

This means: 'which doesn't have/need to be any criticism of the mattress'. The negative idea is transferred from the verb (need) to the complement (the rest of the sentence) 'no criticism ...'.

Alan
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[Lost_Soul]

hi !

I think it's time for me to hit the sack, which need be no criticism of the softness of the mattress

does the phrase in bold mean that:
which isn't meant to be any cricisizm of the softness...

thanks

[Snoopy_Blah_Blah]

Thank you all for replies.

What I tried to ask was why there was no "to" in this sentence? I can walk, I must work, but I need to do something..? Or am I wrong?

I think it's time for me to hit the sack, which need [b]to[/] be no criticism of the softness of the mattress

[Lost_Soul]

Hi, Snoopy_Blah_Blah

Need can be either followed by to or not. It depends on your personal preference
You can say both:

He needs to take a bath
He need take a bath

To all who knows Could you answer my question above (in my last but one post in this thread). I would be very grateful

[Snoopy_Blah_Blah]

Thank you very much, lost_soul:)