Question

It seems that 和It seems as if区别

Answer 1

It seems that和It seems as if的区别：意思不同、用法不同、侧重点不同

一、意思不同

1.It seems that意思：看起来似乎;似乎;看来;似乎;好像

2.It seems as if意思：似乎

二、用法不同

1.It seems that用法：在以it作形式主语的句子中或引导宾语从句、状语从句时常可省略。

例句：

It seems that you are letting things get you down. 

看上去快要累趴下了。

2.It seems as if用法：引导条件状语从句,从句可为真实条件从句,也可为虚拟条件从句。

例句：

It seems as if he has ace up his sleeve. 

似乎手中握有王牌。

三、侧重点不同

1.It seems that侧重点：表示抽象的。

2.It seems as if侧重点：表示客观存在的。

Answer 2

It seems that American fast food is the most popular in the worle.看来美国的快餐是世界上最受人欢迎的。在这个句子里It seems that…是一个固定句型，“看来，似乎是，好像”的意思。
例如：
It seems that she is happy. 她似乎很高兴。
It seems that he likes his new job. 他看起来很喜欢他的新工作。
It seems that they don't like the idea. 他们似乎不喜欢这个主意。
It seems that…句型也可以转换成 名词或代词 ＋ seem ＋ 动词不定式的句型，其原意不变。如果动词不定式为to be ＋ 形容词时，to be往往省略。例如：
American fast food seems to be the most popular in the world.
看来美国的快餐是世界上最受人欢迎的。
She seems to be happy.
她似乎很高兴。
He seems to like his new job.
他看起来很喜欢他的新工作。
They don't seem to like the idea. 他们似乎不喜欢这个主意。

as if 的用法
一、as if 从句的作用
1． 在look, seem 等系动词后引导表语从句。如：
She looks as if she were ten years younger． 她看起来好像年轻了十岁。
It seems as if our team is going to win． 看来我们队要胜了。
2． 引导方式状语从句。如：
She loves the boy as if she were his mother． 她爱这男孩，就好像她是他的母亲一样。
The child talked to us as if he were a grown-up． 那孩子跟我们谈起话来，像个成年人似的。 二、as if 还可用于省略句中
如果as if 引导的从句是“主语＋系动词”结构，可省略主语和系动词，这样as if 后就只剩下名词、不定式、形容词（短语）、介词短语或分词。如：
He acts as if （he was） a fool． 他做事像个傻子。
Tom raised his hands as if （he was going） to say something． 汤姆举起手好像要说什么。 She left the room hurriedly as if （she was）angry． 她匆忙离开房间好像生气的样子。
三、as if 从句的语气及时态
1． as if 从句用陈述语气的情况。 当说话者认为句子所述的是真实的或极有可能发生或存在的事实时。如：
It sounds as if it is raining． 听起来像是在下雨。
He talks as if he is drunk． 从他谈话的样子来看他是醉了。
2． as if 从句用虚拟语气的情况。 当说话人认为句子所述的是不真实的或极少有可能发生或存在的情况时。从句虚拟语气动词时态的形式如下：
（1）如果从句表示与现在事实相反，谓语动词用一般过去时。如：
You look as if you didn’ t care． 你看上去好像并不在乎。
He talks as if he knew where she was． 他说话的样子，好像他知道她在哪里似的。
（2）从句表示与过去事实相反，谓语动词用“had＋过去分词”。如：
He talks about Rome as if he had been there before． 他说起罗马来好像他以前去过罗马似的。
The girl listened as if she had been turned to stone． 那女孩倾听着，一动也不动，像已经变成了石头似的。
（3）从句表示与将来事实相反，谓语动词用“would／could／might＋动词原形”。如：
He opened his mouth as if he would say something． 他张开嘴好像要说什么。
It looks as if it might snow． 看来好像要下雪了。