He had thousands of students,many of _whom_ achieved great success in their own field.这句话为什么要填whom,而不是who或which

thousands of thousands是什么意思 He defrauded his employers of thousands of dollars.分析结构,of thousands 是怎么个意思 People have had pet dogs for thousands of years. 翻译 He had thousands of students,many of _whom_ achieved great success in their own field.这句话为什么要填whom,而不是who或which thousands of thousands of thousands of. thousand 、thousands、thousands of区别 thousands of tens of thousands of hundreds of thousands of Tens of thousands of hundreds of thousands of thousands and thousands of 和thousands of的区别 thousands and thousands of与thousands of的区别? 英文课本里的一句话,不太明白语法,He had theories about almost any subject under the sun ,including vegetarianism ,the drama,politics,and music; and in support of these theories he wrote pamphlets,letters,books…thousands upon thousands I have had thousands of classes since I started school nine years ago. 英语翻译He said unemployment figures due out next week were likely to show that hundreds of thousands more jobs had been lost.怎么翻译?这句话里面的due due在这个句子中修饰哪个词 tens and thousands of