有个英语句子不理解some birds aren’t meant to be caged这里的mean（meant）什么意思

有个英语句子不理解some birds aren’t meant to be caged这里的mean（meant）什么意思 以下2个英语句子第一个为什么加to?第2个为什么不加?Would you like to see some magic?Would you like some birds or some frogs? 这个英语句子有问题吗?Some flowers come to the world,the bees and the birds become happy,they sing and dance in the flowers. 有个句子不理解,Many documentary cover science sucjects in great depth while also including some clever story telling plus the human interest aspect.telling plus 求高手来解释英语句子,The vocabulary of Old English contains some fifty or sixty thousand words,.这句话我就不理解some做什么意思,既然有具体数字为什么还要用some呢? There aren't some birds in the sky.句子改错 线性代数有个问题不理解, there are some birds singing in the tree, 这个句子有there be 句型,又有动词ing.这个句子错了吗?帮下忙 there are some birds singing in the tree,这个句子有there be 句型,又有动词ing,这也是现在进行时吗 有个英语句子不理解帮我看看your sister passed me in her new car ,driving at geat speed.driving是动名词么为什么要用ing?这个词在句子是什么成分?能不能能用其他词替换? 一句初二的改写句子.SOS```To learn some knowledge about birds is necessary.（同义句）___ ___ ___ ___ some knowledge about birds. for some reason造4个句子要求有翻译 我在做英语阅读的时候,有个不理解的句子,He still needs six months of growth before he hits ful size.怎么翻译,尤其是hits ful 请教有个句子 不理解 Airlines can make special offers that are sometimes cheaper than train tickets.There are also shuttle and commuter flights between some major cities that are close to each other.'请问这两个句子中that 是起什么 英语句子结构的几道题写出斜体部分在句子中的成分,用英语字母表示1、Many birds live comfortably in Zhalong Nature Reserve(斜体是Many birds ） （）2、Some scientists are watching the red-crowned cranes there(斜是are 1.去某地作短暂的停留 英语 2.Some of birds stay there for a short time 同意句 Some of birds 不理解这句子,头重脚轻?求英语帝现身说法. 英语阅读知道单词的意思,但句子不理解