I've got a terrible headache and I feel really sick today.
我头疼得厉害,今天觉得很恶心。
I would have gone on the picnic if it hadn't rained.
如果没下雨,我就去野餐了。
She always referred to them as 'the shifting population', for they came and went with such frequency that I never even got a chance to learn their names.