The look on his face must have been about another aggravatio
3个回答

The look on his face must have been about another aggravation entirely.

1.情态动词 may 和 must 常用来表示可能性,may 表示没有多大把握的判断,must 表示把握较大的判断.

* may

对当前情况的猜测:may be

对过去情况的猜测：may have been

* must

对当前情况的推测：must be

对过去情况的推测：must have been

2.be about another aggravation,about 表示“在...的附近/边沿” ,这里意思是：似乎处于再一次病情恶化的边沿.

3.副词 entirely 加强动词 be （处于）的程度,即“必定整个处于...”

翻译：他脸上的表情肯定表示了（他）完全处于再一次病情恶化的边沿.

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