69. It is 90 dollars in price.
70. Its 200 mph in velocity. 速度是每小时200英里。
It is + 数词 + meters/miles/kilometers long/wide.
71. Its three kilometers long for from east to the west.
72. Its 200 meters wide from this side to that side.
七、指环境情况
73. Its very quiet in the forest.
74. Itll be very interesting at the party today.
75. It is always very clean and tidy in my sons room.
76. Its very chilly in my room.
77. It was noisy when he got to the classroom.
78. If it is convenient to you, I am going to visit you.
79. It was exciting when we watched the astronauts taking space walks.
八、替代this或that
80. ---Whats this/that? ---Its my pencil sharpener.
81. Thats not interesting, is it?
82. This is your point, isnt it?
九、作形式主语
(一)、替代动词不定式
It is + adj. to do sth.
83. It is good to eat vegetables.
84. It is an honor to have been asked to speak at the meeting.
It is + adj. +for sb. to do sth.
注意:此结构中的形容词是描述事情的、说明句尾动词不定式特征的形容词。这些形容词主要有certain, clear, dangerous, difficult, easy, hard, illegal, impossible, important, obvious, possible, polite, proper, right, unnecessary, unimportant, unlikely, useless, useful等。
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