作业帮1.I'll be in charge of the work when Mr.Smith _____ next week.A.leaves B.is away(选哪个为什么?）2.My sister has never played badminton before.This is the first time she ____ to play.A.is trying B.have tried C.has tried D.was trying3.We're late
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1.I'll be in charge of the work when Mr.Smith _____ next week.A.leaves B.is away(选哪个为什么?）2.My sister has never played badminton before.This is the first time she ____ to play.A.is trying B.have tried C.has tried D.was trying3.We're late
1.I'll be in charge of the work when Mr.Smith _____ next week.
A.leaves B.is away(选哪个为什么?）
2.My sister has never played badminton before.This is the first time she ____ to play.
A.is trying B.have tried C.has tried D.was trying
3.We're late.The play was started.I wonder how long ago _____.
A.did it begin B.it began C.was it begining D.it has begun
(选哪个?为什么?）
4.This was the least interesting book ____ during my holidays .
A.I ever read B.I have ever read (选哪个?为什么?）
1.I'll be in charge of the work when Mr.Smith _____ next week.A.leaves B.is away(选哪个为什么?）2.My sister has never played badminton before.This is the first time she ____ to play.A.is trying B.have tried C.has tried D.was trying3.We're late
1.B.(这题我没有很确定,就是凭的预感,还有就是 is away有on business的意思)
2.A.(因为是第三人称的现在时态,所以可以排除B,D,句子中没有体现“她以前没有打过羽毛球”所造成的影响,而且还有"this time",所有倾向于用现在进行时)
3.A(句子中出现ago,所以一定是过去时,排除d,也不能用过去进行时.至于A和B,我觉得凭语感就是A,你可以念念看哪个比较顺口.答案一定是A)
4.B.（ever正常情况下是和完成时一起用的,在书面语当中一般不会出现“sb ever did sth 这样的句子.）
1.B be in charge of the work 是延续性的，leave 是瞬间动词，be away 是延续性
2.C(很确定） 固定句型
it(this,that) is the first(secong,third...) time (that) sb has done sth
3.B 出现了ago就要用过去时，排除C,D
从句中顺序：疑问词+陈述...
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1.B be in charge of the work 是延续性的，leave 是瞬间动词，be away 是延续性
2.C(很确定） 固定句型
it(this,that) is the first(secong,third...) time (that) sb has done sth
3.B 出现了ago就要用过去时，排除C,D
从句中顺序：疑问词+陈述句，how 就是疑问词
4.B 出现了ever就要用完成时
收起
1b in charge of sth
in the charge of sb
be away表离开的状态
2a强调现在、
3d多久之前就开始了
4b 你可以看一下现在完成时的用法就知道了
B表状态
A表现在（不太确定）
B过去式标志词ago
B要有助动词have