he has been to the moon for_____

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he has been to the moon for_____
at times
sometime
several times
sometimes
主要是不懂句子的意思,无法做题、.

选第三个,首先“has been to”表示“已经去过”,其次根据选项排除可知选第三个,几个短语我就不解释了,关于“time”有许多短语,易混淆,具体如下：at a time 一次；at one time 曾经,注意区分
ahead of time 提前；all the time总是
at all times 随时；once upon a time 从前
in time 及时；on time 准时,注意区分
in no time立刻,at no time决不,注意区分
还有很多,要注意积累,积累多了做题就简单了
以上是我的愚见,希望对你有用

选择正确的答案 Man as been to the moon .It has been the first step Man he moon.A has gone to B has been to C was to D went to He has been to the Great Wall中为什么been 阅读理解The journey to the moon has been the first step towards The possibility _____man's traveling to the moon has been pr the possibility of man‘s traveling to the moon has been prov The moon is the ------- place that man has been to so far 用f He has never been to the factory.（反义疑问句） He has never been t He has already been to ( ) every country in the world. He has been accustomed to _____ early in the morning. The Smiths has been in China for___.He has been to Shanghai_ He has been to many places in the USA.这里的has been