Means 'considering that ~' or 'for a ~', introducing a standard from which the result unexpectedly deviates. You state a premise, then point out that the reality does not match what that premise would lead you to expect. It always carries a note of mild surprise.
[Plain form] / [Noun] + にしては
彼は初心者にしては上手だ。
Kare wa shoshinsha ni shite wa jouzu da.
For a beginner, he's quite skilled.
Noun 初心者 + にしては — the skill is unexpectedly high given the premise
たくさん練習したにしては、成績が悪かった。
Takusan renshuu shita ni shite wa, seiseki ga warukatta.
Considering how much he practiced, his results were poor.
Plain past 練習した + にしては — the outcome contradicts the effort
この店は東京にしては安い。
Kono mise wa Toukyou ni shite wa yasui.
For being in Tokyo, this shop is cheap.
Noun 東京 + にしては — cheapness is surprising given Tokyo's reputation
• Always implies the result is contrary to expectation (surprise). • The premise must be a specific standard, not a general one — use わりに for looser proportional judgments. • Cannot be used when the premise and result match as expected.
The JLPT rarely asks whether you recognise a pattern — it asks which of several similar patterns fits. These are the ones ~にしては is tested against.
わりに means 'relatively / for what it is' and is looser; にしては requires a clear, specific standard and a sharper sense of the result being unexpected.
として simply states a role/capacity ('as a beginner') with no surprise; にしては adds the nuance that reality deviates from that role's expectation.
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