3.be supposed to应当;理应
[教材原句] I'm going to try to go to either Montreal or Ottawa University, as both are supposed to have good Physics Departments.
我要努力考取蒙特利尔大学或渥太华大学,因为这两所大学的物理系都很棒。
(1)be supposed to do sth.应该做某事
be supposed to have done sth.
本应该做某事(实际未做)
be supposed to be ...
被认为是……
(2)suppose/supposing (that)
假定/假如……
(3)I suppose so.
我认为是这样。
I suppose not.= I don't suppose so.
我认为不是这样。
①The bus was supposed to arrive half an hour ago.
=The bus is supposed to_have_arrived (arrive) half an hour ago.
公交车本来应该在半小时之前到达的。
②Supposing/Suppose (suppose) that you are wrong, what will you do then?
假设你错了,你会怎么办?
[联想发散] 表示“本来应该做某事(但未去做)”的结构还有:should have done sth., ought to have done sth.等。
4. It_is_hard_to_think of a world without metals.
很难想象一个没有金属的世界。
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