Not only did the systematic clearing of forests in the United States create farmland (especially in the Northeast) and gave consumers relatively inexpensive houses and furniture, but it also caused erosion and very quickly deforested whole regions.
Not only did the systematic clearing of forests in the United States create farmland (especially in the Northeast) and gave consumers relatively inexpensive houses and furniture, but it also
Not only did the systematic clearing of forests in the United States create farmland (especially in the Northeast), which gave consumers relatively inexpensive houses and furniture, but also
The systematic clearing of forests in the United States, creating farmland (especially in the Northeast) and giving consumers relatively inexpensive houses and furniture, but also
The systematic clearing of forests in the United States created farmland (especially in the Northeast) and gave consumers relatively inexpensive houses and furniture, but it also
The systematic clearing of forests in the United States not only created farmland (especially in the Northeast), giving consumers relatively inexpensive houses and furniture, but it
我看别的帖子了，很多同学把which理解成the systematic clearing of forests ，这是不对的。which紧接在farmland后面，正确。有几本英汉词典把farmland狭义地译作“农田”，其实英语里它有“农庄”的意思。即a rural area where farming is practiced。只有农庄或者农场能给消费者提供住房和家具，这是常识。通过systematic clearing of forests ，可以开垦出农田（由此到农庄的建立），但决不会是systematic clearing of forests 提供住房和家具。所以A。C。D。E。全都是错的，不但语法错误，而且逻辑错误！
1)which修饰有歧义;(2)but also后面缺少主语,不对称.