Japan’s Prime Minister 主語(yǔ).
is appealing to 謂語(yǔ).
the Japanese people 賓語(yǔ)
to unite to overcome .目的狀語(yǔ).
其中有個(gè)從句:
overcome what he says,is the worst crisis his country has faced since the end of World War II.
overcome 帶賓語(yǔ)從句,he says 可以理解成 that he says 做為定語(yǔ)從句,
更一般理解"he says" 是插入語(yǔ)
What is is the worst crisis his country has faced since the end of World War II.
就是overcome 的賓語(yǔ)了.
這里面,
crisis后面也跟了個(gè)定語(yǔ)從句:(that) his country has faced since the end of World War II.
since the end of World War II.時(shí)間狀語(yǔ)從句.強(qiáng)。。。he says理解成插入語(yǔ)，整個(gè)句子就容易理順了那么逗號(hào)要么？插入語(yǔ),通常有"逗號(hào)"的.如果定語(yǔ)從句,一般就不加了.