Certainty Signal
How sure is the speaker?
含义
A signal of certainty, probability, doubt, assumption, hearsay, inference, or confidence.
如何识别
Look for words like certainly, probably, maybe, apparently.
示例
certainly|probably|maybe|apparently|surely
probably true|maybe later|apparently finished
She is probably at home.
Visual guide
claim: She is at home.
^
certainty layer:
how sure is speaker?
maybe -> probably -> certainly
low mid high
Where can E07 live? adverb: probably particle: maybe modal verb: MOD + verb verb/mood: CERT-form same job: confidence
语言视角
用母语深入讲解
Certainty and evidence strength are expressed lexically with words like 一定, 可能, 好像, 听说, 据说; they are not usually obligatory grammar.
他好像不知道。
tā hǎoxiàng bù zhīdào = he seems not know
在所学语言中
英语可以用情态动词、probably/certainly 等副词、I think 等表达以及语调来表示说话人有多确定。注意 must 有时不是“必须”，而是“根据判断一定是”。
She must be at home.
must + be：must 表示强推断或很确定，意思是“她一定在家”。
学习者常把表示推断的 must、may、might 和表示义务或许可的意思混淆，例如把 She must be at home 理解成“她必须在家”。
Same block, different coding
Both languages use this block strongly, but they signal it differently. Focus on form changes, not only meaning.