发布时间:2018-10-11 北京智赢
以TPO7【Agriculture, Iron, andthe Bantu Peoples】为例
Unlike in the Americas, where metallurgy was a very late andlimited development, Africans had iron from a relatively early date, developingingenious furnaces toproduce the high heat needed for production and to control theamount of air that reached the carbonand iron ore necessary for making iron.
整个句子读完,首先确定黄色标光部分是主干,前半部分比较状语语+定从,与Africans做比较;后半部分以developing分词引导直到句子结束做状语,都是修饰Africans,其中包含2个to do目的状语以及that引导的定语从句。
图例: