1. It's very easy for me to get tired when I dance.
我跳舞时很简单感到累。
该句为一固定句型：It's + adj. + (for sb) + to do sth
“做某事关于或人来说是……”，句中It为方式主语，真实的主语是后边的动词不定式
结构。
It's very hard for us to finish the work on time.
要准时完结这项作业是十分困难的。
It's very important for everyone to celebrate Christmas.
庆祝圣诞节对每个人来说都是很重要的。
2. I usually have fruit and vegetables because I want to be healthy.
由于我想健康，所以我常常吃水果和蔬菜。
because是连词，意思是“由于”，用来引导表原因的状语从句。在汉语中常用“由于……，所以……”表原因和导致的成果，但在中这样的关联词不能一起出现在一个语句中，只能用其间一个。
He doesn't come to school because he is ill.= He is ill so he doesn't
come to school.
由于他生病了，所以没来上学。
3. 中表明频率的副词按频率由高到低依次是：always, usually, often, sometimes, seldom, never
She always gets up at six.
她总是六点钟起床。
They sometimes go skiing in winter.
冬季他们有时去滑雪。
对频率副词发问用how often
—How often do you go swimming? 你多久去游一次泳？
—I never go swimming. 我从不去游水。
句型
1. How long do you sleep every night?
你每晚睡多长时刻？
2. How much TV do you watch every day?
你每天看多长（时刻）电视？
3. I love hamburgers, but I don't eat them any more.
我爱汉堡，但我不再吃了。
4. How often do you exercise?
你多久训练一回？
5. Good luck with your new diet and lifestyle.
祝你顺畅施行新的饮食和日子方案。
6. Where are you going for dinner?
你们计划去哪儿吃饭？
7. This helps me start the day.
这帮助我开端一天（的日子）。
8. I need vitamin to get healthy.
我需求维他命来坚持健康。
