英语问题：since,while,even,if这四个词的用法和意思都有那些，要全啊 高中英语单选
even since\u82f1\u6587\u7ffb\u8bd1\u662f\u81ea\u4ece\u7684\u610f\u601d\u3002
\u7528\u6cd5,\u4e00\u822c\u5c31\u662f\u53ef\u7528\u5728\u53e5\u9996,\u81ea\u4ece\u7684\u610f\u601d.
\u4e3b\u53e5\u7528\u73b0\u5728\u5b8c\u6210\u65f6,\u4ece\u53e5\u7528\u4e00\u822c\u8fc7\u53bb\u65f6
Ever since he moved to London, i haven`t seen him.
It has been five years since we met at the museum last time.
since 有自从的意思 since two years ago 就是从两年前开始算，表示一段连续的时间，时间段。while 就是当...的时候，表示一个时间点，比如 6 o' clock 准点，5：59 或者 6：01 都不是。
even 是甚至的意思，I don't even love you. 我甚至都不爱你，那后面可能接 “你还指望我什么呢”是这个意思，表示情况更进一个层次，更糟，或者更好，更快，或者更慢。
if 是条件状语，比如 If I love you，I would treasure you. 上面一句是我甚至都不爱你，那一切免谈了，这句的意思就是 如果我爱你，那我就会珍惜你。if 指的是我有这个前提条件，换一句，If you would come，I would show you the way. 意思是如果你来了，我就带你去。这句就是有一个条件，这个条件就是你来了，所以if 后面跟的都是促使事情发生的前提条件。
都为连接词，中文意思有比较明显的区别。在做题时联系上下文的意思进行选择。
since,因为，引导原因。
while,而，有转折的意味
even,甚至
if，如果，引条件状语
因为,甚至,
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绛旓細涓銆while浣滃悕璇嶇敤锛岃〃绀衡滀竴浼氬効鈥濃滀竴娈垫椂闂粹1.She likes to lie down for a while after lunch. 濂瑰枩娆㈠崍楗悗韬轰竴浼氬効銆2.Coming to another country to study requires a big adjustment and it takes a while to fit in.鏉ュ埌鍙︿竴涓浗瀹舵眰瀛︼紝闇瑕佽姳涓娈垫椂闂存潵閫傚簲銆 浜屻While浣滆繛璇(1)...
