1·If you keep them in your heart and don't talk about them with others, you will even fall ill at last.
如果你把它们放在心里，不与别人谈论它们，你最后甚至会生病。
2·If I fall ill, I'll see my doctor.
如果生病了，我会去看大夫。
3·What will happen when she fall ill?
如果她生病了，又会发生什么？
4·Jack looks as if he is going to fall ill.
杰克看上去好像要生病的样子。
5·What if I fall ill while I'm away on holiday?
如果我在放假时生病了怎么办？
6·It is easy for the old to fall ill in winter.
老年人很容易在冬天生病。
7·People often fall ill because of cold weather.
人们经常因为天冷而生病。
8·I am very healthy, and I almost do not fall ill.
我非常健康，我几乎不生病。
9·When pets fall ill, they need to be sent to the special hospital for pets.
当宠物生病的时候，它们需要送去专门的宠物医院。
10·It is said that many students at the school started to fall ill in late 2015.
据说该校的很多学生从2015年底开始生病。
1·What will happen when she fall ill?
如果她生病了，又会发生什么？
2·It is easy for the old to fall ill in winter.
老年人很容易在冬天生病。
3·What if I fall ill while I'm away on holiday?
如果我在放假时生病了怎么办？
4·People often fall ill because of cold weather.
人们经常因为天冷而生病。
5·I am very healthy, and I almost do not fall ill.
我非常健康，我几乎不生病。
1·If I fall ill, I will stay home.
如果我病了，我会待在家里。
2·I fall ill because of the cold weather.
我因为寒冷的天气病了。
3·You have to see a doctor if you fall ill.
如果你病了就赶快看医生。
4·When did you fall ill?
你什么时候病的？
5·She may fall ill, in which case she will have to be taken to the hospital at once.
她可能病了。如果是这样，就得马上送她上医院。
1·People with HIV infection, however, in close contact with a TB patient, are more likely to catch TB and fall ill.
但是，艾滋病毒感染者与结核患者密切接触，更有可能感染结核和患病。
2·So you could well find yourself suffering as a result of swine flu even if you don't fall ill.
所以即使没有患病，你最终也将受到甲流的影响。
3·The men often fall ill and suffer fever, so I have decided to take live animals.
人们经常患病和发烧，所以我决定带一些活着的动物。
4·The flat magpies say:Huan Mr. skin fall ill in the beginning and clean with the herbal medicine, very hot burn to spread easy cure;
扁鹊说：一开始桓公皮肤患病，用汤药清洗、火热灸敷容易治愈；
1·Dr Shaffer draws a parallel with a classic virus-infection curve: high at the beginning as those most susceptible fall ill, but gradually tailing off as people adapt.
谢弗博士画了一条和传统的病毒感染曲线相平衡的曲线：在一开始的时候很高因为那些最易感的人群都得病了，但是随着人们逐渐适应，也就变得越来越少。
2·Much as doctors understand diseases but cannot predict when you will fall ill, economists' fundamental mission is not to forecast recessions but to explain how the world works.
如同医生通晓百病却不能预测人们会何时得病一样，经济学家的根本任务不是预测衰退，而是解释这个世界是如何运转的。