observations were made__the children at the beginning and at the end of pre school and first grade.of ,on填哪个?why?
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observations were made__the children at the beginning and at the end of pre school and first grade.of ,on填哪个?why?
observations were made__the children at the beginning and at the end of pre school and first grade.
of ,on填哪个?why?
observations were made__the children at the beginning and at the end of pre school and first grade.of ,on填哪个?why?
1.The writer of the question,I reckon,intended "of" as the correct answer,but I might be wrong.
2.Many people,esp.Chinese teachers and learners of English,believe "make an observation of sth/sb" means watching carefully the way something happens or the way someone does something.They think that "make an observation on/about sth/sb" means commenting on sth/sb.
3.Given the fact that there is no clue as to what the researchers actually did at the beginning and at the end of the pre-school periods and during the first grade,I'm not very sure of my answer.I'm inclined to choose "of",albeit this uncertainty.
make observations of sb 的用法了解就解决了