Learn a useful trade like shoemaking为什么是a不是an

Learn a useful trade like shoemaking为什么是a不是an learn a trade是什么意思 learn a useful lesson是什么意思 The Prince who had told Andersen to learn a useful trade was now the King为何不是用 now was 而是was now?原因是? 求句型分析.不是说一个句子不能有两个动词吗?I tell you this for your own good；learn a useful trade like shoemaking.为什么这个句子有tell和learn两个动词呢?不是不可以这样吗?如果这样不是要用and连接吗? why ( ) english? it's useful. A.not to learn B.not learning C.not learn D.don't learn a useful They find it __ to learn English.A、use B、uses C、using D、useful Students brave enough to take this course will learn a lot of useful skills的翻译 形式主语后面加什么I know it is useful to learn a language well To learn English is important and useful. You will find( )useful to learn even a little English.A it B it was C that D this You will find( )useful to learn even a little English.A it B it was C that D this You will find ______ useful to learn even a little English.A.it B.it was C.that D.this 英语同意句句型转换To learn a foreign well is useful,we find.We find _______ ________ to learn a foreign language well. to learn a foreign language well is useful,I think(改为同义句)I think it useful to learn a foreign language well .这里的第二句话中为什么用it而不是it's life is a trade The girl found （）very useful to learn English well.A：it B:this C:that D:those