English grammar?

Question

Please tell me whether the following sentence is wrong.
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Then teachers have to assist students as much as possible during the courses, which demands both effort and skill.
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I feel the use of "which" is questionable. Thanks!

Answer 1

Might be better as two sentences.

As a result (or consequence, if you need a $50 word), teachers are required to assist students as much as possible during the course. (This) A/assistance demands both effort and skill.

Answer 2

The teachers have to assist students as much as possible during the courses, which demands both effort and skill.

Answer 3

The use of 'which' is indeed questionable, though it does not appear to be incorrect. You could consider making it two sentences: "Teachers then have to assist students as much as possible during the courses. This demands both effort and skill." That sounds alright to me.
(I put the 'then' after 'teachers', it sounded a little better.)
Hope that helped you some.

Answer 4

I wish you would've typed the sentence before, because to me it seems like the 'then' at the beginning is questionable.
Maybe instead;

Teachers then have to assist students as much as possible during the courses; a task that demands both effort and skill.

Answer 5

It doesn't include what happens before "Then". For example, try "When there is no funding for teaching assistants, then teachers have to...".

What are you trying to say? Instead of using one long complicated sentence, simplify and clarify by using two or three short sentences.
"It's important for parents to volunteer in the classroom, even if they are inexperienced. Both the students and the teachers need help with simple tasks such as cleaning up after projects and keeping storage shelves tidy. If volunteers can perform simple tasks it frees up the teacher to give the type of instruction that demands more experience and higher education levels. If there is no funding for teaching assistants or tutors there is less individual attention provided to each student. Teachers then must assist students as much as possible during class time. This assistance demands both effort and skill."

Answer 6

The error in that sentence is in the word demands; it should be demand. Courses being a plural noun requires the use of a plural verb such as demand in this case. See, now doesn't this sound better? ====================================
Then teachers have to assist students as much as possible during the courses, which demand both effort and skill. ========================================= "HAPPY NEW YEAR"

Answer 7

You could rewrite... The teachers have to assist students as much as possible. This demands both effort and skill.

Answer 8

Strictly speaking you're right to question the 'which'. Technically it ought to read 'Then teachers have to assist students as much as possible during the courses, THAT demands both effort and skill.'
Of course in the spoken language, we'd tend not to be so discriminating.
Hope this helps.

Answer 9

No, it's definitely demands, referring to the assisting, rather than demand, referring to the courses.

Which is not incorrect, but it would be better reworded as

Then teachers have to assist students as much as possible during the courses; this demands both effort and skill.

as somebody else suggested.

Also I agree that Teachers then.... is better than Then teachers.

Answer 10

teachers must supply effort and skill to assist students during the courses,