History has to be vague and is therefore very interesting.
In China children have little rights and therefore have to do many things that they do not enjoy doing.
Computers have not only brought convenience but they have also made people learn more.
3、用not only把第一个谓语动词切开，用but also把第二个谓语动词切开
Those parents, however, have supported such a stupid decision.
Those parents have , however, supported such a stupid decision.
It is, however, hardly true that……
例：6. If you could change one important thing about your hometown, what would you change Use reasons and specific examples to support your answer.
A nice environment will make people happier.
A nice environment will also make people healthier. A good environment will not only make people happier and healthier, but it will even make people more productive.