Soon after, the annual tonnage of lobster legally harvestedin Belukian waters began declining; in 1996, despite there being no reductionin the level of legal lobster fishing activity, the local catch was 9,000 tonsbelow pre-1992 levels.
两个句子合在了一起,让阅读难度变高了。前半句的tonnage一时看不懂,于是凌乱了。又夹杂在annual和lobster之间,让人一眼没看出主语。后半句里面的there being也是让人不熟悉的姿态(谁说的being一定错来着?不能因为不熟悉就说人家错。)修饰语的干扰能破解的话,那local catch所在的分句应该不会有太大问题了。
于是,我们把它拆开来看,看红线划开的上下两句,上面的那句的核心和下面那句的核心表出来了。你看下面那句长长的修饰语了吗?其实主干藏在后面的地方。那这样看是不是容易多了