tend (to) 照顾
2)tendency n.倾向 a tendency to/towards sth…的倾向，趋势 have a tendency to do sth. 倾向于做某事， 往往会做某事
Eg. My grandmother tends to go to bed early every day.
5. Without the ‘green house effect’, the earth would be about thirty-three degrees Celsius cooler than it is. 如果没有温室效应, 地球会比现在冷33℃。 这是一个含蓄虚拟条件句。 有时假设的情况并不以条件从句形式表示 出来, 而是通过一个介词短语或其他方式 表示。常用的词或短语有: without, but for,
e.g. What are you going to do with the amount of money?
7. It means that more heat energy tends to be trapped in the atmosphere causing the global temperature to go up.
Compared with your brother, you
should make greater efforts to study English.和你哥哥相比，你应该更加努 力学习英语。
3. So how has this come about and does it matter?
come about: 发生, 造成, 相当于happen 你能告诉我事情是怎么发生的吗？
①用于否定句或疑问句, 后接that引导的宾语 从句。 ②用于肯定句, 一般接whether 或if引导的宾语 从句。 如: I don't doubt _t_h_a_t__ he is telling the truth. 我毫不怀疑他在讲真话。
