这位政治家非常小心，不做出任何自己无法兑现的承诺。
The politician was careful not to make any promises he couldn't keep.
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was英 /wɒz/|美 /wɑz/
careful英 /ˈkeəfʊl/|美 /ˈkɛrfʊl/
not英 /nɒt/|美 /nɑt/
to英 /tuː/|美 /tu/|英 /tə/|美 /tə/
解释
was careful + not + to make：be 动词 + 表达谨慎的形容词 careful + not to（否定不定式），表示主语因谨慎而有意识避免某行为。
The politician was careful not to make any promises he couldn't keep.
was careful + not + to make：be 动词 + 表达谨慎的形容词 careful + not to（否定不定式），表示主语因谨慎而有意识避免某行为。