the first textbook written for teaching english as a foreign language came out in the 16th century.为什么teach 要用动名词啊?还有为什么用 written for
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the first textbook written for teaching english as a foreign language came out in the 16th century.为什么teach 要用动名词啊?还有为什么用 written for
the first textbook written for teaching english as a foreign language came out in the 16th century.
为什么teach 要用动名词啊?还有为什么用 written for
the first textbook written for teaching english as a foreign language came out in the 16th century.为什么teach 要用动名词啊?还有为什么用 written for
the first textbook written (被写的= which was written)for(表示目的,为了) teaching(动词作定语,修饰English,意思为教学的) English as(当做) a foreign language came out in the 16th century
for是介词后用doing形式。written for作为textbook的后置定语又与textbook构成被动关系(课本被写来用做……)因此用written
这里的for和written不是一个固定词组,for在这里表目的,即为了。因为for为介词,teach为动词,所以用ing 其实就是变成了名词短语