I
noun
BAD : The report takes a close look on meat consumption.
GOOD : The report takes a close look at meat consumption.
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have/take a look at sth : 'They're going to take a look at a new house this evening.'
II
verb
1
BAD : Someone should inspect the kitchen twice a week to look whether everything is nice and clean.
GOOD : Someone should inspect the kitchen twice a week to see whether everything is nice and clean.
BAD : Wait here and I'll look if I can find him for you.
GOOD : Wait here and I'll see if I can find him for you.
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see = find out (by checking): 'I'll go and see whether they have any rooms available.' 'While you're in the kitchen, can you see if the eggs are cooked?'
Compare: 'I looked to see whether it was still raining.'
2
BAD : The two younger children looked like tired.
GOOD : The two younger children looked tired.
BAD : The job was not as easy as it looked like.
GOOD : The job was not as easy as it looked.
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look like + noun phrase: 'She looks a bit like my sister.'
look + adjective (WITHOUT like ): 'The man looked very suspicious.' 'His wife looks much happier these day.'
3
BAD : Then I looked the person sitting next to her.
GOOD : Then I looked at the person sitting next to her.
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look at sb/sth : 'I looked at the clock to see what time it was.' 'What are you looking at?'
4
See HOW 2 (↑ how )
5
See note at FEEL 4 (↑ feel )