作业帮when引导的时间状语从句用一般过去式?但是'look left,right and then left whe
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when引导的时间状语从句用一般过去式?但是'look left,right and then left when you
cross the road; 句子中的cross怎么没有用过去时?while引导的不是常用进行时态吗,但是‘many people like to add some sugar while they drink black tea’ 中的drink怎么没用ing
cross the road; 句子中的cross怎么没有用过去时?while引导的不是常用进行时态吗,但是‘many people like to add some sugar while they drink black tea’ 中的drink怎么没用ing
when 引导时间状语从句不一定用一般过去时.
Look left,right and then left when you cross the road.这一句就不用!
因为when（当……时候）并不表示过去,when you cross the road 适用于过去、现在和将来,即无论你是昨天,还是今天,还是明天横穿马路,你都要注意左右看.
while 引导从句常用进行时,但是如果一个动词是延续性动词,就不一定用进行时.
drink 是延续性动词.另如：
He learned a lot about England while he stayed there.（stayed 就不是进行时）
再问： ����cross��ԭ�ͣ�
再答： �ǵģ���ԭ�Ρ�
再问： ��������������⣬��ô�жϰ�
再答： ��������ǹ�ȥ��ʱ̬��when�Ӿ�Ҳ�ù�ȥ�ģ�����һ���ȥʱ����ȥ����ʱ�ȣ����磺I was watching TV when someone knocked at the door.The teacher asked me to stand up when I didn't pay attention.I saw nobody in the classroom when I got there this morning.���������һ�㽫��ʱ��when�Ӿ�Ҳ�����ڵģ�����һ������ʱ�����ڽ���ʱ�ȣ����磺I will tell him the truth when he comes.��ʹ��+when�Ӿ䣬��Ӿ�������ʱ������һ������ʱ�����ڽ���ʱ�ȣ����磺Stay quiet when you are in the library.Listen to the teacher when he is speaking.
Look left,right and then left when you cross the road.这一句就不用!
因为when（当……时候）并不表示过去,when you cross the road 适用于过去、现在和将来,即无论你是昨天,还是今天,还是明天横穿马路,你都要注意左右看.
while 引导从句常用进行时,但是如果一个动词是延续性动词,就不一定用进行时.
drink 是延续性动词.另如：
He learned a lot about England while he stayed there.（stayed 就不是进行时）
再问： ����cross��ԭ�ͣ�
再答： �ǵģ���ԭ�Ρ�
再问： ��������������⣬��ô�жϰ�
再答： ��������ǹ�ȥ��ʱ̬��when�Ӿ�Ҳ�ù�ȥ�ģ�����һ���ȥʱ����ȥ����ʱ�ȣ����磺I was watching TV when someone knocked at the door.The teacher asked me to stand up when I didn't pay attention.I saw nobody in the classroom when I got there this morning.���������һ�㽫��ʱ��when�Ӿ�Ҳ�����ڵģ�����һ������ʱ�����ڽ���ʱ�ȣ����磺I will tell him the truth when he comes.��ʹ��+when�Ӿ䣬��Ӿ�������ʱ������һ������ʱ�����ڽ���ʱ�ȣ����磺Stay quiet when you are in the library.Listen to the teacher when he is speaking.
when引导的时间状语从句用一般过去式?但是'look left,right and then left whe
when引导的时间状语从句能用过去式吗
when引导的时间状语从句,从句用现完,主句用?
You should look left and right when you gou___theroad.
while引导的时间状语从句多用进行时态,而when引导的时间状语从句多用一般时态.
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