First of all, as means "as……" (New York Philharmonic decided to hire Allen as the next music director …).

Second, as a conjunction, the reason "Because of ……" is derived from the option A in part B (2010): With the approaching of economic recession, most people begin to feel anxious. As the economic recession is imminent, people are more and more anxious. )

Thirdly, as is "the same as …, like …" (Reading Comprehension of Zhenti in 2009 1, the first sentence of the second paragraph: So it seems paradoxical to talk about habits in the same context as creativity and innovation).

Fourth, when "when …, when …") Read paragraph 4: Just as a priest learned when he merged coastal areas and laughed at people who didn't come to the New World for religion. When a priest met people at the seaside, he heard someone joke that they didn't come to the New World for religious reasons. )

I found these when I was doing my own problems, and they should have other uses. The landlord will go and have a look for himself. For example, the as table is accompanied by "with …", and the table gives in to "although, but".