1.B
非謂語動詞做狀語,一般是考查該動詞和句子主語的關(guān)系.動詞短語lay off(解雇) 這個動作是主語the company主動發(fā)出的,就用現(xiàn)在分詞.如果以后出現(xiàn)什么“主語被怎樣怎樣”,即主語與該動詞是被動關(guān)系,則動詞選用過去分詞.
寫個例子你體會一下：
Seen from the sky,the city is very beautiful.城市被從天上看
Seeing from the sky,he found the city was very beautiful.他從天上看（城市）
2.A
A.fascinating 令人感到著迷的（Ving）
B.fanscinated （自己）感到著迷的(Vpp)
那些人(the people)當(dāng)然是“令人感到著迷的”,這個人就包括上句的you啊.
類似的有interesting/interested,exciting/excited.
如：I'm (interested) in this (interesting) book.
我對這本令人感到有意思的書感到很有意思
這種題目你只要把中文意思弄清楚明確,就很容易.
3.D
這是not...until...句型的強(qiáng)調(diào)句型.
正常句子：The parent birds will not go to the separate ways until the group birds leave the nest.
翻譯：直到雛鳥離開鳥窩,它的爸媽才會各奔東西.
不知道樓主對強(qiáng)調(diào)句型了解多少.not...until..的強(qiáng)調(diào)句型是對until引導(dǎo)的狀語進(jìn)行強(qiáng)調(diào),其結(jié)構(gòu)是：
It is/was not until+狀語（從句）+that+主/大句的肯定句.
如：I won't leave until he comes here.
=It is not until the comes here that I will leave.
She didn't leave until 11:00 last night.
=It was not until 11:00 last night that she left.
4.C
這是一個倒裝句型,正常句子是：
He made a great impression nowhere than in Paris.
既然把did提前了,當(dāng)然后面的動詞就用原形,而不可能重復(fù)出現(xiàn)兩個過去時.
想想初中學(xué)過的一般疑問句吧：
What did you say at the meeting?
過去式did已經(jīng)提前,say就只能用原形了.
再如：Why does he like English?
三單3形式does已經(jīng)在前,后面like也只能用原形了.