英语词汇do be careful/don’t be careful的意思、翻译、用法及例句-英语用法大全

词组	do be careful/don’t be careful
释义	do be careful/don’t be careful 见be 知识来源：赵振才编著.英语常见问题解答大词典.哈尔滨：黑龙江人民出版社.1998.第336页.
随便看	twice two two and two is/are two thirds is/are two-thirds/two thirds types of U unattached infinitive(无依附动词不定式) unattached participle(无依附分词) uncountable nouns(不可数名词) underneath underneath/beneath underneath/under understand unduly unfamiliar to/unfamiliar with uninterested/disinterested unique universality unlawful/illegal unless/if... not unmarked plurals(无标记复数) unparalleled until until

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