In the sentence I wrote, I am thinking what is the proper construction and tone to relate two clauses of which one is about necessity of something
1) Note that the teacher only prepares a list of words and he doesn’t need to provide the word definitions.
2) Note that the teacher only prepares a list of words and he is not needed to provide the word definitions.
3) Note that the teacher only prepares a list of words and he is not required to provide the word definitions.
4) Note that the teacher only prepares a list of words and he is not obliged to provide the word definitions.
5) Note that the teacher only prepares a list of words and it is not required that him to provide the word definitions.
6) Note that the teacher only prepares a list of words and it is not necessary to provide the word definitions.
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Best Answer
I'd go for either
or
2) and 3) imply that somebody else will provide the word definitions in the end, without the teacher's help.
5) is grammatically incorrect, it should be
which conveys the same meaning as 3.
In 6), the second clause looks like it is directed to the pupils, as in: