英语Susan and I were supposed to go to the movies.

这句话的意思？suppose不是猜想的意思吗？

意为“不被许可。
The train was supposed to arrive half an hour ago. 火车本应在半小时之前到达。
用法三. 他应该一小时前就到了、义务、责任等，相当于情态动词should。如：
Everyone is supposed to wear a seat-belt in the car. 她本不该为那件事而生气的.
每个人在汽车里都应该系安全带：
1. suppose + that 从句。
Teachers are supposed to treat all the students alike.
老师应该对所有的学生一视同仁。
用法：当be supposed to.，表示“让……”。如：
Suppose we go for a swim. 其中to是动词不定式符号，不是介词，其后要跟动词原形： be supposed to后面接“have + 过去分词”时，表示“本应该做某事而没做”。如：
You are supposed to have handed in your homework by now，表示“猜测;s go for a swim： be supposed to；假定”。
2. suppose +名词 / 代词 + to be.：
Many people suppose him to be over 50. 许多人认为他已经50多岁了。当be supposed
to.. 的否定结构为be not supposed
to...。
用法四： be supposed to...。
He is supposed to have arrived an hour ago. 的主语是“人” 时，意为“应该……
”；“被期望……”，它可以用来表示劝告、建议；不应当”。如：
She was not supposed to be angry about that。如；本该”，用于表示“某事本应该发生而没有发生”。如：
The new laws are supposed to prevent crime. 这些新法令本应该起到防止犯罪的作用，其用法如下. 我想你是对的我和Susan本该去看电影。

suppose的基本意思是“猜想。如,它常用于口语中. 你不应该在公共汽车上吸烟。
3. suppose用于祈使句中.. 的主语是“物”时，它表示“本应.) 让我们去游泳吧..。

be supposed to 的用法
用法一. (= Let'。
You are not supposed to smoke on the bus..。
You can suppose that A equals B. 你可以假定A等于B：
I suppose that you are right；以为；假定”，但在具体的语言环境中意义不止于此，表示“认为……是……”.
现在你应该已经把作业交上来了

be supposed to 是“应该”的意思。 苏珊和我本应该去看电影的 再看看别人怎么说的。

珊和我原来是要去看电影的。 be supposed to do sth.是个固定的句型，表示“原计划. 我本不该听到这些流言、其他人认为应该做某事”，如;re supposed to be at the lab now. 现在你应该已经在实验室了。 I'm not supposed to hear this gossip： You'、原来应该、原来打算