1、Although the talk had already been on for five minutes,he still was not able to find a chair ____.A.to sit B.to sit down C.to sit in D.for sitting这题我知道不选A和D的原因,但是B和C怎么选,2、When the bell rang for the class,the st
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1、Although the talk had already been on for five minutes,he still was not able to find a chair ____.A.to sit B.to sit down C.to sit in D.for sitting这题我知道不选A和D的原因,但是B和C怎么选,2、When the bell rang for the class,the st
1、Although the talk had already been on for five minutes,he still was not able to find a chair ____.
A.to sit B.to sit down C.to sit in D.for sitting
这题我知道不选A和D的原因,但是B和C怎么选,
2、When the bell rang for the class,the students stopped ____ to wait for their teacher _____.
A.to talk,to come B.talking,to come C.not to talk,coming D.talking,coming
这题我知道第一个空选talking,为啥
1、Although the talk had already been on for five minutes,he still was not able to find a chair ____.A.to sit B.to sit down C.to sit in D.for sitting这题我知道不选A和D的原因,但是B和C怎么选,2、When the bell rang for the class,the st
第一题：
答案：C
1、后面用动词不定式结构作后置定语,修饰前面的chair.排除D答案.
2、sit 是不及物动词,表示“坐”,后面不能直接接宾语,而这里sit的逻辑宾语是前面的chair,所以排除AB答案,down 为副词.
第二题：
答案：B
stop doing sth 表示“特指做某事”,根据句意,我们先排除AC答案.再者,wait for sb.to do sth.表示“等待某人做某事”,后面用动词不定式结构.
1, 选C，因chair 是sit in 的宾语。sit down就无法和chair 关联了。
2. 选B, 因wait for sb to do sth.是固定搭配，如果用coming替代to come， 语法不对。
1. 其实b也是对的，意思是to find a chair (in order) to sit down. C 是对的，等于find a chair in which to sit.
2. wait for somebody to do something, 所以其他都不对
sit in(prep.) the chair
wait for sb. to do sth.
1.a chair 作的是sit in的宾语，而sit down是单独使用的，后面不接chair
2.wait for sb to do sth等待某人做某事
还原语序：sit in a chair。所以作定语时用to sit in
wait for sb to do sth 固定搭配
1.选C是肯定的啊。只能说sit in a chair ,而不能说sit down a chair.
2.第一空你懂，我也就不解释，第二空用不定式表将来。
不懂，追问。