根据高考3500词整理：高中英语必会1051个短语！(3)

70. apply to sb for sth
71. apply oneself to (doing) sth
72. apply...to... / be applied to
73. an approach to (doing) sth
74. approve of...
75. argue with sb about / over sth
76. upon/ on his arrival
77. feel ashamed of
78. fall/drop asleep
79. open your mouth wide
80. be widely used
81. be associated with...
82. assuming that....
83. much to my astonishment,
84. attach importanve to sth
85. be under attack/ threat
86. attempt to do sth but in vain
87. attempted murder
88. attend to sb/ sth
89. pay attention to...
90. tend to do sth
91. on average
92. be/ become fully aware of... raise one’s awareness
93. make sb fully aware of...
94. raise people’s awareness of...
95. turn one’s back on sb
96. back up
97. strike / find a balance between ... and ...
98. lift ban on...
99. ba based on / base... on...
100. on the basis of ...
101. on a daily/ regular basis
102. to begin with, at the beginning/ to be honest/ to make matters worse