3.強(qiáng)調(diào)：
強(qiáng)調(diào)是一種修辭方式，如前面所說(shuō)的“倒裝”就是一種重要的強(qiáng)調(diào)手段。
此外，還可以借助助詞進(jìn)行強(qiáng)調(diào)，例如：
She did come yesterday; I saw her in the office.
（她昨天確實(shí)來(lái)了；我在辦公室見(jiàn)到她的。）
本講要討論的主要是“it is …。that…”強(qiáng)調(diào)句， 即：將句子中除謂語(yǔ)動(dòng)詞以外的成分（主語(yǔ)、賓語(yǔ)、狀語(yǔ)等）用“it is …。that…”加以連接，組成強(qiáng)調(diào)句，如果是人，也可以用“it is… who…”， 例如：
John bought a toy train for his son yesterday.（昨天約翰給他兒子買了輛玩具火車。）
強(qiáng)調(diào)主語(yǔ)：It was John who （或that）bought a toy train for his son yesterday.
強(qiáng)調(diào)賓語(yǔ)：It was a toy train that John bought for his son yesterday.
強(qiáng)調(diào)賓語(yǔ)（或目的）：It was for his son that John bought a toy train yesterday.
強(qiáng)調(diào)時(shí)間狀語(yǔ)：It was yesterday that John bought a toy train for his son 。
學(xué)習(xí)強(qiáng)調(diào)句要注意以下兩點(diǎn)：
不要與主語(yǔ)從句相混淆，例如：
It is well known that light travels in straight lines.
（眾所周至，光以直線傳播?！?主語(yǔ)從句）
It was not until the early 18th century that the significance of the event was generally realized.
（直到18世紀(jì)初，這一事件的意義才為公眾所認(rèn)識(shí)?！獜?qiáng)調(diào)句）
強(qiáng)調(diào)句與主語(yǔ)從句的簡(jiǎn)單區(qū)分是：強(qiáng)調(diào)句去掉“it is…that…”，句子結(jié)構(gòu)依然正確，意思不變，如上句：“until the 18th century the significance of the event was not generally realized”。 但是主語(yǔ)從句就不行，如上句：“well know that light travels in straight line”就不通， 句中 “well know” 變成了無(wú)依著的成分。
強(qiáng)調(diào)是一種修辭方式，如前面所說(shuō)的“倒裝”就是一種重要的強(qiáng)調(diào)手段。
此外，還可以借助助詞進(jìn)行強(qiáng)調(diào)，例如：
She did come yesterday; I saw her in the office.
（她昨天確實(shí)來(lái)了；我在辦公室見(jiàn)到她的。）
本講要討論的主要是“it is …。that…”強(qiáng)調(diào)句， 即：將句子中除謂語(yǔ)動(dòng)詞以外的成分（主語(yǔ)、賓語(yǔ)、狀語(yǔ)等）用“it is …。that…”加以連接，組成強(qiáng)調(diào)句，如果是人，也可以用“it is… who…”， 例如：
John bought a toy train for his son yesterday.（昨天約翰給他兒子買了輛玩具火車。）
強(qiáng)調(diào)主語(yǔ)：It was John who （或that）bought a toy train for his son yesterday.
強(qiáng)調(diào)賓語(yǔ)：It was a toy train that John bought for his son yesterday.
強(qiáng)調(diào)賓語(yǔ)（或目的）：It was for his son that John bought a toy train yesterday.
強(qiáng)調(diào)時(shí)間狀語(yǔ)：It was yesterday that John bought a toy train for his son 。
學(xué)習(xí)強(qiáng)調(diào)句要注意以下兩點(diǎn)：
不要與主語(yǔ)從句相混淆，例如：
It is well known that light travels in straight lines.
（眾所周至，光以直線傳播?！?主語(yǔ)從句）
It was not until the early 18th century that the significance of the event was generally realized.
（直到18世紀(jì)初，這一事件的意義才為公眾所認(rèn)識(shí)?！獜?qiáng)調(diào)句）
強(qiáng)調(diào)句與主語(yǔ)從句的簡(jiǎn)單區(qū)分是：強(qiáng)調(diào)句去掉“it is…that…”，句子結(jié)構(gòu)依然正確，意思不變，如上句：“until the 18th century the significance of the event was not generally realized”。 但是主語(yǔ)從句就不行，如上句：“well know that light travels in straight line”就不通， 句中 “well know” 變成了無(wú)依著的成分。